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:
The everglades where nearly wiped out by (A) the sun (B) builders (C) sea cows (D) alligators

Ex Output:
B


Ex Input:
Using mirrors to focus collected light from heavenly bodies allows (A) detailed observation (B) foregone conclusions (C) radiation experiments (D) celestial music

Ex Output:
A


Ex Input:
For it to survive, the horse relied on its owner to bring it (A) a harness (B) a lead. (C) grain (D) a saddle

Ex Output:

C