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 segway can travel a much greater distance inside a shopping mall before needing a recharge then when it is cruising around outside on the street. Question: Which surface is rougher? (A) shopping mall (B) street
[EX A]: street

[EX Q]: Sentence: Bob was cleaning with a scrub brush. He cleaned both tile and carpet. He noted that the carpet caused more friction. Question: Which surface would cause the scrub brush to scrub with less speed? (A) The carpet (B) The tile
[EX A]: The carpet

[EX Q]: Sentence: Two cars are traveling down a highway. They start out next to each other, but in 10 minutes, the car in the right lane is way ahead of the car in the left lane. Question: Which car wasn't going as fast as the other car? (A) the one on the left (B) the one on the right
[EX A]:
the one on the left