Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: Corals form large colonies in shallow tropical water., Fact2: Coral is the calcite shell of the coral animal., Question: Animals with _ form large colonies in shallow tropical water (A) calcite shells (B) an organism's body (C) Absorb light (D) biological diversity (E) Leptospirosis (F) produce offspring (G) allow growth (H) to stay warm
Student:
A