【单选题】

Woman: It's awfully dark for four o'clock. Do you think it's going to rainMan: You'd better do something about that watch of yours. It must have stopped hours ago. Mine says seven.Question: What conclusion can we draw from this conversation
A．Neither of their watches keeps good time.

B．The woman's watch stopped 3 hours ago.
C．The man's watch goes too fast.
D．It's too dark for the woman to read her watch.