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").

Example Input: Fact1: the Earth being tilted on its rotating axis causes seasons, Fact2: Spring, summer, autumn, and winter are the seasons of the year., Question: What causes spring, summer, autumn, and winter? (A) meteor showers (B) heat production (C) the sun's energy (D) Generating heat (E) Earth tilted on rotating axis (F) Something with a head, thorax, and abdomen (G) Earth vibrating (H) lunar cycle
Example Output: E

Example Input: Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Beavers are primarily aquatic animals., Question: what requires great amounts of water to survive (A) sunlight (B) beavers (C) octopus (D) mussels (E) trout (F) carbon (G) oxygen (H) amphibians
Example Output: B

Example Input: Fact1: Corals form large colonies in shallow tropical water., Fact2: Some sea fish live in tropical waters, where the water is always warm., Question: Where do colonies of coral form? (A) Pink water (B) allow growth (C) Stale water (D) the environment (E) Flavored water (F) complex (G) Warm water (H) more abundant
Example Output:
G