Instructions: 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.
Input: Sentence: After a grueling work-out, Brandon sat drinking a beverage when, in the gym's mirror, he noticed a sweat bead traveling down the side of his face. At the same moment a sweat bead was traveling down his arm. His arm was significantly hairier than his face and he noticed the sweat was sliding quickly and with ease down his face, but was barely moving on his arm. Question: Where on Brandon did the sweat bead experience the most friction? (A) face (B) arm.
Output:
arm