【单选题】

Man: Just think I went through so much work on my paper only to get aC、

Woman: Well, I don’t think grades are everything. What you’ve learned in the process will prove useful in your future work.
Question: What does the woman imply
A、The man should work harder to improve his grades.
B、The man will benefit from the effort he’s put in.
C、It serves the man right to get a poor grade.
D、It was unfair of the teacher to give the man aC、