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: Toby went ice skating during the winter and noticed that he hardly had to put any effort into moving forward when he switched from the sidewalk to the ice on the pond. Question: Which surface was smoother? (A) Sidewalk (B) Ice pond
[EX A]: B

[EX Q]: Sentence: David and Laura are playing Frisbee. David is not as strong as Laura is. Question: When they throw the Frisbee, who throws it a lesser distance? (A) David (B) Laura
[EX A]: A

[EX Q]: Sentence: Nell has very thick hair; Lynn's hair is much thinner. Question: Whose hair is stronger? (A) Nell (B) Lynn
[EX A]:
A