Instructions: 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: natural disasters can cause animals to leave an environment, Fact2: Floods are the most common natural disaster., Question: What can cause an animal to leave an environment? (A) wind (B) influenza (C) drought (D) Pollution (E) mines (F) floods (G) chemicals (H) coal
Output:
F