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 basic outside of our planet is comprised of (A) types of stone (B) frozen green grass (C) solid ice balls (D) molten hot lava

Ex Output:
A


Ex Input:
if a driver drove by a corn field and tossed out his lit cigarette, what could happen? (A) the corn will grow stouter (B) the corn would experience conflagration (C) the corn would grow bigger than normal (D) the corn will be more tasty

Ex Output:
B


Ex Input:
A bass may make its home (A) in a liquid (B) in a field (C) in a tree (D) in a cage

Ex Output:

A