Q: 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: smell is used for finding food by some animals, Fact2: Food is needed for survival., Question: What do some animals need to survive? (A) radiation (B) smell (C) Energy (D) harm (E) warmth (F) oxygen (G) defeat (H) Water
A:
B