Regarding the "Severe" or "Pervasive" Standard for Assessing Harassment Cases

Regarding the "severe" or "pervasive" standard for assessing harassment cases, which of the following statements is NOT true? ​

A) to prove harassment, the plaintiff must show that the conduct complained of was both severe and pervasive, unless it occurred outside work
B) to prove harassment, the plaintiff must show that the conduct complained of was severe or pervasive
C) the degree of severity required is in inverse proportion to its pervasiveness
D) none of these