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: Tim has to push an ice sculpture across the ballroom in order to get his restaurant ready for a wedding. He notices that it is easier to push the sculpture when he moves it across the polished ballroom floor than when he moves it across the rough cobblestone floor. Question: If Tim is trying to keep the ice sculpture from melting, which surface should he push it across in order to produce less heat? (A) ballroom floor (B) cobblestone floor
[EX A]: ballroom floor

[EX Q]: Sentence: Jim and Kelly took their kids to watch the fireworks show. They wanted to make sure their kids didn't experience loud sounds that might damage their hearing. Question: In order to do this where would the family stand and observe? (A) In the front row of the crowd (B) in the back of the crowd
[EX A]: in the back of the crowd

[EX Q]: Sentence: Driving a car to work takes less time then riding a bus. Question: Which vehicle moves at a greater rate of speed? (A) bus (B) car
[EX A]:
car