Which of the Following Is Correct with Respect to Restrictive

Which of the following is correct with respect to restrictive covenants included in employment contracts?

A) Such restrictive covenants are always void and have no place in employment contracts.
B) Such restrictive covenants are enforceable in court if reasonable and not against the public interest.
C) A void restrictive covenant destroys the whole contractual relationship and neither party has any obligations under the agreement.
D) For such a clause to be valid, it is only necessary to show that it was needed to protect the employer's interest.
E) The imposition of such a restriction is at the option of the employer and the employee has no say in the matter.