In order for the pattern of activity necessary to prove a claim of sexual harassment be demonstrated, the plaintiff __________.

A. must show premeditation

B. need not show that the complained of activity occurred over a protracted period of time, if it was sufficiently frequent or intensely offensive

C. must show that more than one harasser was involved

D. must demonstrate, by clear and convincing evidence, that he or she was never complicit with any sexually oriented behavior involving the defendant