A、Because she was worried about the birthday party. B、Because she found this history course very challenging. C、Because she thou

M: Are you feeling alright, Jane? You look pretty tired.
W: My sister and I had a birthday party for my brother last night. I didn’t get much sleep.
M: Where did you have the party?
W: It was at my aunt’s house. Then right after the party I had to start typing the history paper. I had to hand it in first thing this morning. I was kind of nervous because the professor said he wouldn’t accept any late papers.
M: I don’t know how you do it. I can’t handle a pressure situation like that.
W: Well, I just turned the paper in. and now I’m going home for sleep. See you later.