Which of the Following Statements Is True of Harassment

Which of the following statements is true of harassment?

A) The plaintiff-employee has the burden of proving the affirmative defense.
B) There are similar liability rules regardless of whether the harassing employee is a coworker or supervisor.
C) If the employer is strictly liable for the harassing supervisor's conduct, the employer cannot raise a defense to avoid liability.
D) If the employer was negligent in controlling the working situation, the employer may invoke an affirmative defense.