听力原文：M: Will you please return my stop watch? I need it to time the races tomorrow.
W: Oh, hum. I'm not sure how to tell you. But it fell on the ground and now the second hand doesn't work.
M: Well, don't worry. Let me see whether it still could be repaired.
What is the woman's problem?
A．She needs a watch that shows seconds.
B．She can't find the man's stopwatch.
C．She damaged something she borrowed from the man.
D．She can't assist the man tomorrow.