Sarah Goes into Her Final Exams Feeling Like She Doesn't

Sarah goes into her final exams feeling like she doesn't know anything,that she is dumb,and that she is going to fail every exam.She will probably have a more intense reaction to stress than other people because

A) in general she has more stress in her life.
B) she feels she lacks the ability to cope with the demands of finals.
C) she is undergoing school-related mental, physical, and emotional exhaustion.
D) she is trying to work off frustrated desires or unacceptable impulses in substitute activities that are constructive or accepted by society.