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").

Example Input: A lizard that passed away centuries ago may be viewed most easily today in some ways through (A) globes (B) mirrors (C) telescopes (D) sediment
Example Output: D

Example 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
Example Output: A

Example Input: If milk is going to be measured, it can be measured in (A) only a thin tube (B) only a round dish (C) any kind of shape container (D) only a square container
Example Output:
C