Bret Runs an Illegal Business and Pays Cal,a Law Enforcement

Bret runs an illegal business and pays Cal,a law enforcement officer,not to interfere.The payments are discovered.Bret and Cal are sent to prison.Bret can successfully sue Cal for the return of

A) all of the money paid to Cal.
B) only the money paid to Cal that has been spent.
C) only the money paid to Cal that has not been spent.
D) none of the choices.