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").

Ex Input:
A person is in the forest, lost. They need to signal to others that they are there, and their voice is gone, so they need to do it inaudibly. The person may signal with (A) fire (B) rain (C) leaves (D) ducks

Ex Output:
A


Ex Input:
Rubber can protect from (A) cold (B) burns (C) electricity (D) fire

Ex Output:
C


Ex Input:
If you're stranded on a desert for a week without clothes, you're likely to (A) evaporate (B) find a forest (C) freeze (D) perish

Ex Output:

D