Employment $-$at $-$will $($EAW$)$ is a common law doctrine stating that employers have the right to hire, fire, demote, or promote whomever they choose unless $----------------------.$

Group of answer choices

a$).$ There is a law or a contract to the contrary.

b$).$ The employer is a federal government contractor.

c$).$ The employee has seniority over other employees.

d$).$ The employer's action is viewed as unfair by all employees