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: When observing animals in the wild, which of these are you most likely to see? (A) A frog stalking a rabbit (B) A bear sticking its claws in the river (C) A wolf hunting an eagle (D) A tiger hunting a dolphin
Example Output: B

Example Input: Where does August take place during the winter? (A) China (B) Zimbabwe (C) Canada (D) Iceland
Example Output: B

Example Input: A lake is unsafe for swimming because it is a bit below some farmlands that use (A) pesticides (B) water (C) soil (D) solar energy
Example Output:
A