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: Consider Input: Fact1: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.

Output: C


Input: Consider Input: Fact1: Nonmetal elements are far fewer in number., Fact2: Elements to the right of the semiconductors are Nonmetals., Question: Elements to the right of the semiconductors are far what in number? (A) size (B) hole (C) fewer (D) eight (E) calcium (F) several (G) solid (H) shells

Output: C


Input: Consider Input: Fact1: if a tree falls then sunlight becomes available to the surrounding plants, Fact2: All oaks are trees., Question: How can sunlight get to plants surrounding an oak? (A) the oak can get wider (B) at or near the margins (C) the oak can fall (D) the oak can stay in place (E) competing for resources (F) hydrogen and oxygen (G) the oak can get taller (H) by indirect light


Output: C