单项选择题

Ian: Tomorrow is my big exam. I’m afraid I’ll fail.
Andrew: Don’t worry. You have studied very hard. You have done your best. I think if you calm down, you will do well in the exam.
Ian: You’re right. I’ve prepared the best I can. Thanks for your encouragement.
Andrew: ______

A. That’s not too bad.
B. I’d rather you didn’t.
C. Come on, let’s take a break.
D. It’s a snap.