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").
Q: Fact1: Corals form large colonies in shallow tropical water., Fact2: Some sea fish live in tropical waters, where the water is always warm., Question: Where do colonies of coral form? (A) Pink water (B) allow growth (C) Stale water (D) the environment (E) Flavored water (F) complex (G) Warm water (H) more abundant
A:
G