instruction:
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.
question:
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
answer:
barn floor


question:
Sentence: Charlie is playing in his back yard. He can hear two helicopters approaching. One of them sounds loud and the other one sounds quiet. Question: Which one is more of a distance away? (A) the loud one (B) the quiet one
answer:
the quiet one


question:
Sentence: Sue was angry and kicked the oak door to her house.  It barely budged. When she went inside, she kicked the plywood door to her room.  Her foot went right through. Question: Which door was thicker? (A) the oak door thicker (B) the plywood door was thicker
answer:
the oak door thicker