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 rock may be used as a shelter by a (A) chicken (B) spider (C) giant squid (D) deer

Ex Output:
B


Ex Input:
the earth revolves around the sun in (A) a day (B) a year (C) a week (D) a month

Ex Output:
B


Ex Input:
Plate shifting likely directly created (A) oxygen (B) the Alps (C) human life (D) ocean spray

Ex Output:

B