You will be given a definition of a task first, then some input of the task.
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").

Fact1: Animals use saturated fatty acids to store energy., Fact2: Cows are social animals., Question: what uses saturated fatty acids to store energy? (A) bushes (B) cows (C) Raven (D) humans (E) koalas (F) birds (G) cattle (H) Man
Output:
B