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: 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: Being a nonrenewable resource means coal (A) is highly sought after as an alternate energy source (B) can be replaced and replenished with enough time (C) the industry one day will cease to exist (D) is flourishing with an unending supply

Output: C


Input: Consider Input: Putting a cardboard box in a bin instead of the trash can (A) conserve energy for later (B) save wild animal species (C) keep it from the trash (D) reduce the height of landfills


Output: D