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: Marine species live mainly in shallow coastal waters., Fact2: Many marine species are used for medical research., Question: what are many organisms found in shallow coastal waters used for? (A) heat produced (B) survival (C) surf boards (D) density (E) heat energy (F) Animal survival (G) shoes (H) medical research
Output:
H