Q: 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.
Question: Dio joined a band with how many members in 1975? Passage 1:Vance Astro first appeared as a founding member of the Guardians of the Galaxy. According to Roy Thomas, all of the Guardians of the Galaxy were created in a conference between Arnold Drake and Stan Lee, but it remains uncertain whether each individual character was created by Drake, Lee, or both. The Guardians of the Galaxy debuted in the partial reprint title Marvel Super-Heroes with issue #18 (Jan. 1969), written by Drake and penciled by Gene Colan. After five years' absence, he was revived in several Marvel titles: Marvel Two-In-One #4-5 (July-Sept. 1974), Giant Size Defenders #5, and Defenders #26-29 (July-Nov. 1975). In each case, other heroes such as Captain America, the Thing, and the Defenders aid Astro and the Guardians against the alien Badoon. The first story established that if Vance Astro's containment suit were breached, he would age 1,000 years in a second. This drew numerous queries from readers, and the letters page in Marvel Two-in-One #7 responded by stating that Vance feeds and defecates intravenously. The Guardians were also featured in Marvel Presents #3-12 (Feb. 1976 - Aug. 1977).
 Passage 2:Samuel Shaw was a Revolutionary War naval officer who, along with Richard Marven, were the first whistleblowers of the infant United States. As a whistleblower, Shaw was instrumental in the Continental Congress' passage of the first whistleblower protection law in the United States. Shaw, a midshipman, and Marven, a third lieutenant in the Continental Navy, were moved to act after witnessing the torture of British prisoners of war by Commodore Esek Hopkins, then Commander-in-Chief of the Continental Navy. Shaw and Marven were both from Rhode Island, as was Hopkins, whose brother was Stephen Hopkins, Governor of the new state, and a signatory to the Declaration of Independence. For reporting the misconduct of the Navy's highest officer, Shaw and Marven were both dismissed from the Navy. Worse still, Hopkins then filed a criminal libel suit against Shaw and Marven in the Rhode Island Courts.
 Passage 3:Though his parents were from Cortland, New York, Dio was born in Portsmouth, New Hampshire, where his family resided for his father's service in the U.S. Army during World War II; they soon returned to Cortland. Dio's music career began there in 1957 as part of the Vegas Kings (later Ronnie and the Rumblers). In 1967, he formed the rock band Elf, which became a regular opening act for Deep Purple. In 1975, Deep Purple guitarist Ritchie Blackmore founded the band Rainbow and hired Dio to be his lead singer where the band released three studio albums. Dio quickly emerged as one of heavy rock's pre-eminent vocalists. In 1979, Dio joined Black Sabbath as lead singer. He appeared on three studio albums with the band which met with success: Heaven & Hell (1980) and Mob Rules (1981) and Dehumanizer (1992). In 1982, he left the band to pursue a solo career with two albums certified platinum by RIAA. In 2006, he founded the band Heaven & Hell with ex-bandmate Tony Iommi. Dio was diagnosed with stomach cancer in 2009, from which he died the following year.

A:
3