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: What uses eyes to see by sensing light? (A) trees (B) algae (C) worms (D) elephants

Output: D


Input: Consider Input: In order for trees to use sunlight they must (A) their roots (B) the light switch (C) CPR (D) respire

Output: D


Input: Consider Input: A car slowed down because of (A) bad brakes (B) the engine size (C) the wind (D) the steering wheel


Output: C