Why Did the Supreme Court Justices Rule the Communications Decency

Why did the Supreme Court justices rule the Communications Decency Act unconstitutional?

A) The Act attempted to impose prior restraint on newspapers.
B) The Act violated the First Amendment's right to freedom of assembly.
C) The Act granted too much authority to the executive branch and therefore violated the separation of powers.
D) The Act attempted to protect children by suppressing speech that adults have a constitutional right to receive.
E) The Act imposed penalties that were too severe for certain forms of hate speech.