A、He failed to finish the experiment that day. B、He hasn’t had time to do the experiment. C、He did only part of the experiment.

M: I have this camera here that I bought about 12 months ago. But it suddenly doesn’t work.
W: Let me have a look at your sales slip, I am sorry, sir. Your warranty’s expired.
Q: What does the woman mean?

W: Have you finished the assignment given by Professor Smith? I don’t think you have much difficulty doing that experiment.
M: No, but I didn’t expect it would take me most of the day.
Q: What does the man mean?