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: Rod and Danny are running down the road.  Danny is not as fast. Question: After five minutes, who has gone farther? (A) Rod (B) Danny
[EX A]: A

[EX Q]: Sentence: A shopping cart rolls by itself across a parking lot. Then it gets to a field. The cart rolls only a little more after it enters the field. Question: Why does this happen? (A) the parking lot is a rougher surface (B) the field is a rougher surface
[EX A]: B

[EX Q]: Sentence: Drew is trying to decide whether he should throw some socks away. A pair of blue socks feels very flimsy compared to a pair of black socks. Question: Which pair of socks is more likely to tear if they are worn? (A) black socks (B) blue socks
[EX A]:
B