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:
Which doesn't contain water? (A) Sea of Tranquilitiy (B) Caspian Sea (C) Dead Sea (D) Caribbean Sea

Ex Output:
A


Ex Input:
every four seasons a cedar expands it's (A) lung capacity (B) sight (C) vocal range (D) outer covering

Ex Output:
D


Ex Input:
the lunar surface contains (A) aliens (B) snakes (C) bumpless regions (D) trees

Ex Output:

C