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: smoking tobacco decreases stamina, Fact2: Athletes possess physical stamina., Question: What does smoking harm? (A) people (B) consumers (C) athletes (D) health (E) radiation (F) humans (G) fire (H) tobacco leaves
C