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'.

Example Input: Sentence: Carrie visits Dina at her house. Dina rides her exercise bike while Carrie sits and watches television. Question: Which of the two will have a smaller pool of sweat at their feet when they are done? (A) Carrie (B) Dina.
Example Output: A

Example Input: Sentence: Saturn has greater mass than the Moon of Earth. Question: On which one would you experience stronger gravity? (A) Saturn (B) the Moon
Example Output: A

Example Input: Sentence: A worm and a caterpillar are crawling across a fallen tree trunk. The worm is not as speedy as the caterpillar. Question: Which will take longer to get across the tree trunk? (A) worm (B) caterpillar
Example Output:
A