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:
Why does a wolf eat rabbits? (A) to show rabbits they should stay away (B) to get the energy it needs to survive (C) because it hates rabbits (D) to show other wolves it is strong

Ex Output:
B


Ex Input:
Using mirrors to focus collected light from heavenly bodies allows (A) detailed observation (B) foregone conclusions (C) radiation experiments (D) celestial music

Ex Output:
A


Ex Input:
Glaciers have (A) magic (B) feelings (C) emotions (D) slow, hidden rivers

Ex Output:

D