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 mountain top heats and lava flows, resulting in (A) a hot golden leaf (B) a cold deep sea (C) a raised portion of land (D) a sunken valley of ice

Ex Output:
C


Ex Input:
A plastic toy reduced to a puddle was left on a (A) steep mountain (B) iceberg (C) government propaganda flick (D) hotplate

Ex Output:
D


Ex Input:
Rocks sometimes contain what? (A) element Al (B) books (C) wind (D) fire

Ex Output:

A