Which of the Following Statements About the Doctrine of Employment

Which of the following statements about the doctrine of employment at will (EAW) is true?

A) Employment at will holds that employers can fire an employee at any time, but have to provide them with a valid reason.
B) The freedom to terminate the employer-employee relationship is mutual, both theoretically and practically.
C) The ethical rationale for EAW has both utilitarian and deontological elements.
D) Civil rights laws are not an exception to the EAW because it prohibits firing someone on the basis of membership in certain prohibited classes.