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: David and Michael are doing laps at the park. Question: If David is running and Michael is walking, who travelled a higher distance after ten minutes? (A) David (B) Michael.
Example Output: A

Example Input: Sentence: Ellie exercises on her treadmill each day. One day she sets the treadmill up to be flat and runs on it for a set amount of time. The next day she sets the treadmill to incline so that she is running uphill which causes more exertion in the same amount of time. Question: Which treadmill setup will cause Ellie to drip more perspiration onto the treadmill? (A) the flat treadmill (B) the inclined treadmill
Example Output: B

Example Input: Sentence: Kevin is a lot stronger then Mary. Question: Which person can throw a ball a greater distance? (A) Kevin (B) Mary
Example Output:
A