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.

[EX Q]: Sentence: A brown mouse and a black mouse each run through 50 foot tunnels as quickly as they can. The black mouse made it to the other end in a shorter amount of time than the brown mouse. Question: Which mouse couldn't run as fast? (A) the brown mouse (B) the black mouse
[EX A]: the brown mouse

[EX Q]: Sentence: A new planet has been discovered with two moons circling it. One is reddish and the other is black and gold. Scientists saw that asteroids were more attracted to the black and gold moon. Question: Which of the moons has weaker gravity? (A) the reddish moon (B) the black and gold moon
[EX A]: the reddish moon

[EX Q]: Sentence: Alvin and Cameron are planning a trip to another state.  Alvin travels by plane, while Cameron takes a car.  They leave at the same time. Question: After two hours, who has traveled farther? (A) Alvin (B) Cameron
[EX A]:
Alvin