In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Q: Question: How many years had Dilbert been a televised cartoon by the year that West had a cameo on it? Passage 1:West's first major roles were on Doug and The Ren & Stimpy Show, which were two of the first three Nicktoons on Nickelodeon (the other being Rugrats). Over his career, West has been the voice talent for close to 120 different characters including some of the most iconic animated figures in television history. He has become one of the few voice actors who can impersonate Mel Blanc in his prime, including characterizations of Bugs Bunny and Daffy Duck, the voice Arthur Q. Bryan used for Elmer Fudd, as well as other characters from Warner Bros. cartoons. In 1998, Entertainment Weekly described West as "the new Mel Blanc" and noted his ability to mimic well-known voices, though he would rather develop original voices. West's favorite characters are Philip J. Fry and Stimpy, both of which he originated. West has been very outspoken over his displeasure about the influx of movie star actors providing voice-over for films and major shows. West has stated that he did not like the Disney version of Doug and that he "couldn't watch" the show. West was the voice of the show's namesake, Geeker, throughout Project Geekers 13-episode run. West was the voice of Zim in the original pilot for Invader Zim. Richard Steven Horvitz was chosen for the series role because West's voice was too recognizable, according to creator Jhonen Vasquez during DVD commentary. West is the voice of "Red" in numerous M&M commercials as well as the 3-D movie I Lost my M in Vegas, currently playing at M&M's World in Las Vegas, Nevada. He also voices a number of minor characters in the series . He voiced the character Moobeard in Moobeard the Cow Pirate, a short animation featured on Random! Cartoons and reprises his role as Elmer Fudd in Cartoon Network's series The Looney Tunes Show. In 1999, he also had a cameo in the Emmy Award-winning cartoon Dilbert.
 Passage 2:Born in Charleston, West Virginia, Revercomb received an Artium Baccalaureus degree from Princeton University in 1950. He was in the United States Air Force from 1951 to 1953, and received a Juris Doctor from the University of Virginia School of Law in 1955. Revercomb was a legal assistant for the Federal Communications Commission in Washington, D.C. from 1958 to 1959. He was in private practice in Norfolk, Virginia from 1961 to 1962. He was in private practice in Roanoke, Virginia from 1955 to 1956, then in Charleston, West Virginia from 1956 to 1961, and in Washington, D.C. from 1962 to 1969. Revercomb was an associate deputy United States Attorney General of the United States Department of Justice from 1969 to 1970. He was an Associate Judge of the Superior Court of the District of Columbia from 1970 to 1985. He received a Master of Laws from the University of Virginia School of Law in 1982, at age 53.
 Passage 3:The morning session on Sunday saw Harry Tincknell top the lap times in the #55 Mazda RT-24P, with a 1:34.224, while Ben Hanley led LMP2 with a 1:35.975 in the 81 DragonSpeed Oreca 07, and GTLM was led by Richard Westbrook in the #67 Ford GT with a 1:43.083. The Last Session on Sunday, where only 14 cars ran, saw the #54 CORE Autosport Nissan-Onroak DPi top the times with a 1:35.176 from Loic Duval, while LMP2 was led by the #81 DragonSpeed Oreca 07, with a 1:36.188 from Nicolas Lapierre, and GTLM led by the #911 Porsche 911 RSR, with a 1:43.848 from Patrick Pilet. The Qualifying for DPi, LMP2 and GTLM saw Oliver Jarvis earn the top spot for Mazda Team Joest in the #77 Mada RT-24P, with a 1:33.398 which also unofficially broke the track record, while the #52 topped the LMP2 class with a 1:35.930 from Gabriel Aubry, while GTLM was led by the #3 Corvette C7.R with a 1:42.651 from Jan Magnussen.

A:
1