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:
If you see a mushroom on an old decaying log, its because a mushroom is a decomposer, which gets its food from (A) non-alive things (B) space (C) computers (D) the store

Ex Output:
A


Ex Input:
Thirteen times a year, roughly, the moon (A) crashes into the Earth (B) is orbited by the Earth (C) lights up the Earth (D) completely rotates the Earth

Ex Output:
D


Ex Input:
In humans, bacteria can help digest what? (A) plastics (B) nutriment (C) copper (D) stones

Ex Output:

B