A、The young man had some unusual problems. B、The problem is common for young people. C、It’s not common for young men to leave ho

W: You look very sleepy and tired. What’s wrong, John? Did you stay up very late last night?
M: Oh, no. Well, you know, I’ve been here for only a few days. In my home country, it is still late at night now. I am suffering from jet lag. It’s so hard to overcome this.
Q: What does the man mean?

W: John’s room was in a mess. It seemed that he had never cleaned it.
M: This problem is not uncommon for a young man from home.
Q: What does the man mean?