What are the fundamental principles of the Faragher v. City of Boca Raton and Burlington Industries, Inc. v. Ellerth cases in the realm of sexual harassment? A. Employers are totally liable for the acts of their supervisors only when the employer is aware of the sexual harassment act. B. Employers are not liable for the acts of their supervisors, regardless of whether the employer is aware of the sexual harassment act. C. Employers are totally liable for the acts of their supervisors, when it involves a tangible employment action. D. Employers are liable for the acts of their supervisors, even if there was not intent to engage in sexual harassment.