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 halter sliding across a barn floor gets hotter then one sliding across a field. Question: Which surface forces the halter to travel at a lower rate of speed? (A) barn floor (B) field
[EX A]: barn floor

[EX Q]: Sentence: A karate champion is breaking boards. He has two boards left to break. A thin piece of plywood and a thick piece. Question: Which board will be easier to break? (A) Thick (B) Thin
[EX A]: Thin

[EX Q]: Sentence: Both Tipper and Larry work in construction. Tipper works on the site while Larry works in the office. Question: Who will sweat less over the course of a day? (A) Tipper (B) Larry
[EX A]:
Larry