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

Output: D


Input: Consider Input: A source of heat may come from (A) a cold shower (B) holding hands (C) holding ice (D) Antartica

Output: B


Input: Consider Input: the earth's tilt controls the (A) seasons (B) tides (C) sunset (D) clocks


Output: A