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".

W: Why are you so upset and worried? M: I've been racking my brains all morning, trying to recall where I put my gold watch. But it has been in vain., Question: What do we learn about the man? (A) He just cannot work properly without a watch. (B) He has no idea where he can buy a gold watch. (C) He still does not know where he left his watch.
(C) He still does not know where he left his watch.