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 mountain top heats and lava flows, resulting in (A) a hot golden leaf (B) a cold deep sea (C) a raised portion of land (D) a sunken valley of ice

Ex Output:
C


Ex Input:
A lack of water has a direct connection on the amount of available (A) shelters (B) sustenance (C) rainy days (D) mates

Ex Output:
B


Ex Input:
The main reason people want to use wind as an energy source is because there is (A) make cookies (B) Sing songs (C) smile (D) an everlasting supply

Ex Output:

D