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:
Living underground can be used for hiding from what? (A) food (B) hunters (C) dirt (D) water

Ex Output:
B


Ex Input:
A learned behavior is exhibited when (A) squinting in bright light (B) nailing up a picture frame (C) blinking and gulping air (D) inhaling and exhaling during sleep

Ex Output:
B


Ex Input:
When the Earth is tilted on its axis, as it always is, certain tilts will make it summer one once continent (A) and birds fly around the moon (B) and beans grow on the other side (C) and another's celebrating Halloween (D) and a desert on another

Ex Output:

C