Boris Has a High Need for Achievement,and He Is Currently

Boris has a high need for achievement,and he is currently enrolled in a philosophy course that is required for his major.The professor has never been known to give a student a grade higher than a B and has mentioned that fact in class.What will Boris likely do under these conditions

A)  He will drop the course and switch to a different major. 
B)  He will exert the maximum effort he can because he has a high need for achievement. 
C)  He will not exert his maximum effort because the course has a low incentive value for him. 
D)  He will not exert his maximum effort because he has a low expectation of success.