In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

[EX Q]: Fact1: Lions live in social groups called prides., Fact2: Lions live in Africa., Question: where are there social groups called prides? (A) under the sea (B) outer space (C) complex (D) protected (E) arctic (F) fur seals (G) Summer (H) africa
[EX A]: H

[EX Q]: Fact1: hydropower requires damming a river, Fact2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935., Question: Which of these produces hydropower? (A) deuterostomes (B) Wind Turbines (C) power stations (D) Suez Canal (E) trout (F) Old Faithful Geyser (G) Hoover Dam (H) stations
[EX A]: G

[EX Q]: Fact1: Plants detect and respond to the daily cycle of light and darkness., Fact2: Bamboos are vigorous, rugged plants., Question: What detects and responds to the daily cycle of light and darkness? (A) deep-sea dwellers (B) fens (C) bamboo (D) amoeba (E) Oak (F) asteroids (G) apples (H) rocks
[EX A]:
C