Q: You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.
Sentence: Tim and Marty are on a basketball court getting some exercise. Marty walks around the perimeter of the court while Tim does sprints back and forth from end of the court to the other. Question: At the end of their session, who will have to wipe less perspiration off their face? (A) Tim (B) Marty.
A:
Marty