A、Wait and see how she feels in 24 hours. B、Go home and take her medicine. C、Return to the grocery store to pick up some aspirin

W: Prof. Smith, would you like to come to dinner at our dorm tomorrow? We’re trying to get to know the faculty.
M: If only you’d asked me earlier, I just accepted a speaking engagement.
Q: What will the man do tomorrow?

W: Oh, this terrible headache. Do you have any aspirin? I went right past a clinic on the way back from the grocery store, but I forgot to pick some up.
M: Sorry, I don’t. But there’s another one just down the street that’s open 24 hours.
Q: What does the man imply?