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").
Q: Fact1: competition may cause animals to fight towards members of their own species, Fact2: Competition Animals compete for food and shelter., Question: What may cause animals to fight towards members of their own species? (A) Males and females (B) food and shelter (C) energy of moving objects (D) fashion (E) jealousy (F) vanity (G) parasites (H) threatened
A:
B