In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Input: Consider Input: A star produces light energy and heat because it has a variety of (A) moon rotation causing friction (B) light energy flowing to earth (C) reactions of nuclear form (D) global warming caused by co2

Output: C


Input: Consider Input: What requires energy for growth? (A) a car (B) a hippopotamus (C) a house (D) a desk

Output: B


Input: Consider Input: What does an animal require to survive? (A) interesting locations (B) sunlight (C) cable television (D) nutriment


Output: D