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:
You can work longer when (A) Autumn changes to Winter (B) spring changes to summer (C) tree leaves start falling (D) the first snow starts falling

Ex Output:
B


Ex Input:
Which is the least massive? (A) the Earth (B) the moon (C) the sun (D) the solar system

Ex Output:
B


Ex Input:
Whether a rainstorm, snow, or hail, humanity can find a way to escape it by (A) restoring old city streets (B) creating a protected space (C) building a large community (D) sheltering all the young

Ex Output:

B