1. Let's clarify the problem you are referring to, since you mentioned the answer sheet says the answer is B. 2. Please provide the original question or the problem statement so I can verify why the answer is B and explain the reasoning step-by-step. 3. Without the original problem, I cannot confirm or explain why the answer would be B. 4. Once you provide the question, I will solve it thoroughly and compare with option B as given in the answer sheet.