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: Ann and Ted decide to see who can throw a Frisbee a greater distance. Ann has been lifting weights and her arms are showing some definition, while Ted has been inactive and not doing any workouts at all, so his arms are small and a little flabby. Question: Who will throw the Frisbee a lesser distance from the throwing spot? (A) Ann (B) Ted.
Example Output: B

Example Input: Sentence: Tony is taking a trip to Florida. He goes by plane and returns by bus. Question: What trip took less time? (A) the trip to Florida (B) the trip back
Example Output: A

Example Input: Sentence: Rebecca rolls the globe in her classroom over a book and then the carpeting. Rolling it over the book generates less heat than on the carpet. Question: Which surface has more resistance? (A) book (B) carpeting
Example Output:
B