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: The producer makes its own: (A) body (B) sustenance (C) air (D) grass

Output: B


Input: Consider Input: Animals adapt to their what? (A) appearance (B) feet (C) skin (D) nature places


Output: D