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: When was the Group C category started? Passage 1:The community was named for the farm of Dr. Nelson G. Blalock, a Civil War veteran who had pioneered in the Walla Walla area. He established an agricultural operation of several thousand acres on the flat land here along the Columbia River. The area was first settled in 1879, and Blalock post office was established in 1881. The town was platted in 1881 by the Blalock Wheat Growing Company. The first two buildings, a railroad station and a warehouse, were built by A. J. McLellan, OR&N superintendent of the construction of bridges and buildings. By 1884, the community was shipping wheat and there were daily stagecoaches to Heppner; the population was 50. People and businesses listed in the Polk Directory at that time included two clergymen, a saloon, a wagonmaker, a ferryman, a hotel, a general store, a lawyer, and a dealer in lumber, coal, and feed. In 1904, the town handled about 750,000 bushels of wheat. By 1905, the town had two grain warehouses, a hotel, a general store, a livery and stage stable, a real estate office and an agricultural implement factory. In 1940, Blalock had a population of 19. The post office closed in 1959. In 1968, the community was inundated by the backwaters from the John Day Dam.
 Passage 2:In 1982, Dome built the RC82 as their first effort in the new Group C category of sports car racing. The chassis was built by March Engineering, whilst the engine was a 3.3-litre Cosworth DFL V8 engine. Dome, with sponsorship from Amada, debuted the car at the 1982 6 Hours of Silverstone, and selected Chris Craft, Raul Boesel and Eliseo Salazar to drive it. It would not prove to be a successful debut, as the car succumbed to fuel pressure issues after 116 laps. Dome then entered Craft and Salazar at the 24 Hours of Le Mans, but the suspension mounting failed after 85 laps, and the team were forced to retire. The RC82 was not used again until the 1983 24 Hours of Le Mans; Nick Mason joined the team, but the car lasted 75 laps before succumbing to clutch failure. Following the race, the RC83 made its debut in the 1000 km of Fuji, with the factory phasing out the RC82.
 Passage 3:Brown was born on 15 April 1948, in Tangier, Morocco. His father flew Spitfires during World War II and joined civil aviation in the post war period, flying for Gibraltar Airways and British European Airways. He was educated at Merchant Taylors' School, an all-boys public school in Hertfordshire. He then matriculated into St Catherine's College, Oxford to study history. In 1966, he graduated from the University of Oxford with a Bachelor of Arts (BA) degree in Modern History. This was later promoted to Master of Arts (MA Oxon) as per tradition. He remained at St Catherine's to complete a Diploma in Art History. He then undertook post-graduate research at the Courtauld Institute of Art and completed his Doctor of Philosophy (PhD) degree.

A:
2