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: natural disasters can cause animals to leave an environment, Fact2: Environments are animals homes., Question: What can cause animals to leave their homes? (A) Pesticides (B) natural disasters (C) animal sanctuaries (D) deforestation (E) influenza (F) Electrical energy (G) wildlife protections (H) creating dens
B