You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or 'B'.

[EX Q]: Sentence: Karl is trying to light a match on his pant legs with very little success. He finds a piece of rough leather to strike the match against and the match lights up in no time. Question: Which surface provides more friction for heat? (A) PANT LEG (B) ROUGH LEATHER
[EX A]: B

[EX Q]: Sentence: Darla the cat burglar stayed still until she saw the male police officer's flashlight growing dim and then she breathed a big sigh of relief. But suddenly a female police officer's bright flashlight lit up the night and she knew the jig was up. Question: Which police officer was closer to Darla? (A) The male police officer (B) The female police officer
[EX A]: B

[EX Q]: Sentence: Darla the cat burglar stayed still until she saw the male police officer's flashlight growing dim and then she breathed a big sigh of relief. But suddenly a female police officer's bright flashlight lit up the night and she knew the jig was up. Question: Which police officer was closer to Darla? (A) The male police officer (B) The female police officer
[EX A]:
B