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:
Organisms with only one cell (A) are prohibited from specializing (B) can freely specialize openly (C) are unsure what specializing is (D) learn how to specialize

Ex Output:
A

Ex Input:
What is an example of the fact that crop rotation renews the soil? (A) planting rows of carrots and peas next to one another (B) planting peas one season then carrots the next (C) planting a field of corn with different types in it (D) tilling the soil in between crops

Ex Output:
B

Ex Input:
One day a zebra dies. Zero baby zebras were born in the herd on that day. (A) the zebras traveled a hundred miles that day (B) a new life was created (C) the population went down (D) the population of the herd increased

Ex Output:
C