The Establishment Clause in the First Amendment

The establishment clause in the First Amendment

A) has been applied to questions of the legality of state and local government aid to religious organizations and schools.
B) means that neither the federal government nor state governments can set up a church.
C) is different than the free exercise clause.
D) has been used to decide the actions of government allowing or prohibiting school prayer.
E) All of the above are true.