You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

Example Input: Sentence: Sina and Kim work together. Sina is driving a sports car to work while Kim rides her bike to work. Question: After an hour, who would have gone less distance? (A) Sina (B) Kim
Example Output: Kim

Example Input: Sentence: A steel ball has a greater mass then a pebble. Question: Which object has a stronger gravitational field? (A) steel ball (B) pebble
Example Output: steel ball

Example Input: Sentence: Joe and Mike are throwing rocks at the lake. Question: If Mike is a lot stronger than Joe, who will be more likely to throw a rock further? (A) Joe (B) Mike.
Example Output:
Mike