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: Bill Gates and Lebron James are playing a game of basketball.  Bill Gates is an old guy who doesn't work out, and Lebron James is a young sports adonis who trains daily.  Both stand at half court, but only one hits the backboard. Question: Who? (A) Bill Gates (B) Lebron James
Example Output: B

Example Input: Sentence: Jimbo and James are digging a hole together. Jimbo is doing most of the work, and James is mainly standing around. Question: Which person is sweating more? (A) Jimbo (B) James
Example Output: A

Example Input: Sentence: Karen was playing football at the park. She threw the ball and it hit the ground, rolled on the field, and then rolled into a gravel playground. The ball generated more heat when it rolled over the gravel. Question: Which surface is more level? (A) field (B) gravel
Example Output:
A