In Most States,a Covenant Not to Compete That Has Been

In most states,a covenant not to compete that has been agreed to by an employer and an employee is:

A) Illegal, but the overall employment contract in which it appears remains enforceable as if the contract did not contain the covenant not to compete
B) Illegal, and it invalidates the entire employment contract in which it appears
C) Legally enforceable, if it does not unduly prevent the employee from obtaining similar employment in the employee's chosen trade or occupation
D) Legally enforceable under all circumstances