听一段材料，回答下面几个小题。
What was Paul concerned about?
A. His professor.
B. His final exam.
C. His physics grades.
Why did the woman tell Paul not to worry?
A. The average is important.
B. Chemistry is not his major.
C. He needs to concentrate on physics.
What did the woman suggest doing?
A. Studying harder.
B. Going for a coffee.
C. Repeating the class.