【单选题】

Woman: Listen to me, Joe. The exam is already a thing of the past. Just forget about it.

Man: That’s easier said than done.
Question: What can we infer from the conversation
A、The exam was easier than the previous one.
B、Joe is sure that he will do better in the next exam.
C、Joe probably failed in the exam.
D、The oral part of the exam was easier than the written part.