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: Neptune is one of the largest planets in the solar system. Question: Which object has stronger gravity? (A) Mercury (B) Neptune
Example Output: B

Example Input: Sentence: Several athletes are competing in a throwing contest. Question: Which type athlete, due to upper body strength is likely to throw further? (A) Runner (B) Bodybuilder
Example Output: B

Example Input: Sentence: Roni was playing with a beach ball at the beach. She noticed that when she rolled the ball on the sand, it traveled slower than when she rolled it on the wooden boardwalk. Question: Which surface provides more resistance? (A) sand (B) boardwalk
Example Output:
A