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: After he finished washing dishes, Bill threw a wet sponge at his brother across the room at his brother Ben, hitting him in the face. Ben picked up the sponge and threw it back at Bill, but it didn't reach Bill. It dropped to the floor a foot in front of Bill. Question: Which brother has less muscle strength in their arm? (A) Bill (B) Ben
A:
Ben