Under Which of the Following Circumstances Would a Court Be

Under which of the following circumstances would a court be unlikely to enforce the illegal contract?

A) Where the aggrieved party was unaware of an illegality created by circumstances of which he was unaware but the agreement appeared permissible on its face.
B) Where a party withdraws from an illegal agreement prior to performance.
C) Where the agreement is with an unlicensed attorney.
D) Where one of the parties is less at fault than the other.