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 different Audi race cars have been used in this circuit since it was introduced at the 2000 edition? Passage 1:The 88 Audi Sport UK Team Veloqx R8 of Jamie Davies, Johnny Herbert and Guy Smith started from pole position after Herbert set the overall fastest lap time in the fourth qualifying session. The car led for much of the first eighteen hours until a rear suspension problem created handling difficulties and was corrected in the garage. It gave the lead to the No. 5 Audi Sport Japan Team Goh car of Seiji Ara, Rinaldo Capello and Tom Kristensen and although it caught fire during a pit stop, Ara held off a challenge from the faster Herbert for the rest of the race to win by 41.354 seconds. It was Ara's first Le Mans win, Capello's second and Kristensen's sixth. Kristensen equalled Jacky Ickx's all-time record of six overall victories and was the first driver to win the 24 hour race five times in a row. This was the fourth overall victory for Audi since the manufacturer's début at the 2000 edition. The No. 88 Audi Sport UK Team Veloqx car finished in second and the No. 2 Champion Racing Audi R8 of JJ Lehto, Emanuele Pirro and Marco Werner recovered from a crash in the second hour to complete the overall podium finishers in third place.
 Passage 2:Tuck played high school football in Alabama at Central Coosa County. He played for legendary coach Andrew Slome. Growing up, Tuck's favorite football teams were the San Francisco 49ers and the Dallas Cowboys, but his favorite sport was basketball. Although he began playing football in the seventh grade, Justin only began to take it seriously in his freshman year of high school where he originally started out as a quarterback before changing positions to tight end and defensive end. His accolades include earning Alabama Class 4A Player of the Year as a senior in 2000, as well as lettering in football at both linebacker and tight end. For his career at Central-Coosa, Tuck recorded 492 tackles with 37 sacks, 26 forced fumbles, and 17 fumble recoveries. As a tight end, Tuck had 115 catches for 2,106 yards and 17 touchdowns. Subsequently, Tuck also won two state championships as a member of the high school basketball team.
 Passage 3:Hodes worked as an intern and resident at the Children's Hospital of Philadelphia until 1935, when he moved to Baltimore to take up a position at the Harriet Lane Home of Johns Hopkins Hospital as the dispensary director. In 1936, he developed a method that used ultraviolet light to reduce the infectiousness of viruses, a technique that later was used to create commercial vaccines against rabies and influenza. He became a pediatrician at Johns Hopkins in 1938 while also serving as the medical director of Sydenham Hospital for Communicable Diseases. During an outbreak of diarrhea in 1942, he isolated the first virus known to cause diarrhea, later identified as rotavirus. The same year, he became the first to isolate the measles virus from the brain of a child who had died from measles encephalitis. While stationed in Guam with the U.S. Navy in World War II, he discovered that the Japanese encephalitis virus was spread by mosquitoes. Hodes continued working in Baltimore after World War II, and started teaching at the Johns Hopkins School of Medicine and School of Hygiene, as well as the University of Maryland School of Medicine.

A:
1