Mariam's Supervisor Embarrasses Her by Constantly Telling Sexual Jokes and by Making

Mariam's supervisor embarrasses her by constantly telling sexual jokes and by making sexual comments. Mariam was shocked when she observed that he had sexually explicit material on his computer screen during working hours. Although the supervisor has never directly approached Mariam in a physical way, she feels threatened and is so uncomfortable that it is difficult for her to do her job.
-Mariam's supervisor is guilty of_______ .

A) sexual harassment
B) creating a hostile work environment
C) abusing his power
D) all of the above
E) none of the above