Given the task definition and input, reply with output. In this task, you will be shown a conversation and a question. You need to answer the question and choose the correct option based on the conversation. "W" and "M" in the conversations stand for "woman" and "man".

M: Could I speak to Dr. Chen? She told me to call her today. W: She's not available right now. Would you like to try around three?, Question: What does the woman tell the man to do? (A) Make an appointment with Dr. Chen. (B) Call again some time later. (C) Wait for about three minutes.
(B) Call again some time later.