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").

Example Input: If a person is lost in an arid space with little rainfall, they can live longer if they (A) use water barely (B) use water freely (C) use water liberally (D) use water gratefully
Example Output: A

Example Input: A plane travels through what? (A) gas layers (B) plains (C) oceans (D) time
Example Output: A

Example Input: Your children's children will probably never see a live (A) common house fly (B) Amur leopard (C) fish (D) cockroach
Example Output:
B