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:
A ship navigates with a magnetic compass because it is (A) predictable (B) unpredictable (C) waterproof (D) tradition

Ex Output:
A


Ex Input:
Our eyes can help us with (A) a radio recording (B) shove from behind (C) a label (D) a loud noise

Ex Output:

C