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: How can it be shown that an electrical conductor is a vehicle for the flow of electricity? (A) holding an electrified fence can kill you (B) electricity is unable to conduct well through rubber shoe soles (C) sticking a fork into an electrical outlet is safe if it is plastic (D) electricity is a volatile thing

Output: A

Input: Consider Input: A frog would most likely eat (A) a cockroach (B) another frog (C) a maple leaf (D) a mouse

Output: A

Input: Consider Input: Why would soil be more loosely packed than it was the previous day? (A) the local eagle population (B) the native American population (C) the neighborhood human population (D) the native worm population
Output: D