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: tidal energy can be used to produce electricity, Fact2: Tidal caves are formed by the energy of the rising and falling tides., Question: what can produce electricity? (A) rivers (B) animal transport (C) tidal caves (D) Nematoda (E) rays or beams (F) animals (G) cactuses (H) photons
Example Output: C

Example Input: Fact1: bacteria cause food poisoning, Fact2: Examples are the E-Coli bacteria and Hanta virus., Question: E.Coli poisoning can come from what? (A) germs (B) animal (C) toxins (D) death (E) food (F) skin (G) sunlight (H) running
Example Output: E

Example Input: Fact1: Mammals generate heat mainly by keeping their metabolic rate high., Fact2: Birds have a high metabolic rate and a high energy requirement., Question: What mammals have a high energy requirement and generate heat? (A) cats (B) bats (C) Crustaceans (D) bears (E) frogs (F) lizards (G) birds (H) mammals
Example Output:
G