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: Sam is standing in an underground tunnel. It's pretty dim where he is but he can spot two lights. The light to the west appears brilliant, and the light to the east appears pretty dim. Question: If he wants to walk to the closest light, which was should he go? (A) east (B) west
[EX A]: west

[EX Q]: Sentence: A bagel that is slid across a lunch tray moves slower then a bagel slid across a lunch counter. Question: Which surface will make the bagel heat up the least? (A) lunch counter (B) lunch tray
[EX A]: lunch counter

[EX Q]: Sentence: Joe is unpacking from a big move and is pushing boxes full of stuff around his house. When he pushes boxes on his hardwood floors, he can just give them a shove they travel far on their own. When he pushes them on his carpet, he has to keep pushing, or else they will only travel a short distance. Question: On which surface do the boxes generate more heat? (A) The carpet or (B) the wood?
[EX A]:
The carpet