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: Coral reefs provide food and shelter to many ocean organisms., Fact2: Food gives energy., Question: what do coral reefs provide to ocean organisms? (A) warmth (B) hydration (C) h2o (D) offspring (E) Light (F) oxygen (G) energy (H) seas
Output:
G