A、He doesn’t think he’s spent too much time on study. B、He doesn’t know how to relieve himself. C、He’ll be more stressful if he

W: You’ve spent too much time doing your coursework, Sam. Don’t you think you should go out and get some fresh air?
M: Thanks for the advice, Rose. But this is how I relieve my stress. I’d rather not fall too far behind in my class.
Q: What can be inferred about the man?