Given the task definition and input, reply with output. 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: Coral reefs provide food and shelter to many ocean organisms., Fact2: Organisms or living beings are literally things that are alive., Question: Coral reefs provide what to many living beings in the ocean (A) Chemical energy (B) salt and water. (C) shelter and amusement (D) survival (E) important habitats (F) food and water (G) water and fun (H) food and shelter
H