Given the task definition and input, reply with output. 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: an animal requires energy to move, Fact2: All foods provide energy., Question: What do animals require to move? (A) babies (B) food (C) warmth (D) air (E) oven (F) heat (G) oxygen (H) children
B