GOVERNMENT
In the rights of the accused, there is a ban on bills of attainder. Which of the following are bills of attainder? Select all that apply. (2 ANSWERS)
a. a law that says the Klu Klux Klan is guilty of harassment
b. a law that says one cannot cross onto private property to protest
c. a law that says a Communist cannot be a member of Congress******
d. a law that says public schools cannot promote religion

I do not know the other one, but I do know that C is one of the 2 answers. Thanks!!!