Definition: 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").
Input: Fact1: competition may cause animals to fight towards members of their own species, Fact2: Lions are members of the 'Panthera leo' species., Question: What may cause lions to fight other lions? (A) influenza (B) Pesticides (C) cooperation (D) heat energy (E) competition (F) tradition (G) boredom (H) hormones
Output:
E