$.$ One party to an illegal contract can:

a$.$ sue the other party for breach of contract if the guilt of the parties is not equal.

b$.$ sue the other party for breach of contract regardless of the comparative degree of guilt of the two parties.

c$.$ sue the other party for breach of contract if the law in question was intended to protect persons in the position of the plaintiff.

d$.$ bring a suit to have the illegal contract set aside after it has been performed.

e$.$ both $($ a $)$ and $($ c$)$ are correct