Using the Definition, Which of the Following Would Be Considered

Using the definition, which of the following would be considered sexual harassment?

A) Tracy and Ned are dating and keep getting caught making out in the supply closet.
B) Darri and Yvan flirt at an office party but neither pursues the other because it is against the policy for coworkers to date.
C) Leon keeps asking Meagan out for drinks even though she has a boyfriend and keeps refusing him.
D) Standing on a crowded elevator the UPS man accidently brushes up against Quesha's breast. He apologizes and makes an effort to move away from her.