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: How old was the law firm that Bates joined in 1998? Passage 1:Heavy-water reactors may pose a greater risk of nuclear proliferation versus comparable light-water reactors due to the low neutron absorption properties of heavy water, discovered in 1937 by Hans von Halban and Otto Frisch. Occasionally, when an atom of U is exposed to neutron radiation, its nucleus will capture a neutron, changing it to U. The U then rapidly undergoes two β decays — both emitting an electron and an antineutrino, the first one transmuting the U into Np, and the second one transmuting the Np into Pu. Although this process takes place with other moderators such as ultra-pure graphite or beryllium, heavy water is by far the best. 
 Passage 2:Bates was a law clerk for Judge Roszel Cathcart Thomsen of the United States District Court for the District of Maryland from 1976 to 1977 and was an associate at Steptoe & Johnson from 1977 to 1980. He served as an Assistant United States Attorney for the District of Columbia from 1980 to 1987, and was Chief of the Civil Division of the United States Attorney's Office from 1987 to 1997. Bates was on detail as Deputy Independent Counsel for the Whitewater investigation from 1995 to mid-1997. In 1998, he joined the Washington, D.C. law firm of Miller & Chevalier, where he was Chair of the Government Contracts/Litigation Department and a member of the Executive Committee. From September 1995 until leaving in March 1997, Bates worked as Deputy Independent Counsel for Kenneth Starr and the Independent Counsel's office during the investigation into President Bill Clinton.
 Passage 3:The son of a baptist hotelier, Constandse completed the normal school between 1914 and 1918 and in this period came into contact with the teetotalers movement. In response to World War I, he developed anti-militarist ideas. He joined the Social-Anarchist Youth Organisation (Dutch Sociaal-Anarchistische Jeugd Organisatie, SAJO) in 1919. Within this organisation, he chose the side of the individualist faction within this organisation when factional struggles erupted, denouncing even trade organizations as counterrevolutionary. Instead of taking a job as a teacher, Constandse devoted himself to spreading anarchist ideas. He published two anarchist monthlies, Alarm (1922–1926) and Opstand ("Revolt", 1926–1928), which together with Herman Schuurman's De Moker and Arthur Lehning's Grondslagen renewed the theoretical basis of Dutch anarchism. Constandse's 1927 call for mutiny in De Vrije Socialist ("the free socialist"), following the sending of HNLMS Sumatra to Shanghai, led to a conviction for sedition and a prison sentence of two months.

A:
2