Which of the Following Is True Regarding What the First

Which of the following is true regarding what the First Amendment does not protect?

A) The only category of speech that the First Amendment does not protect is that of defamation.
B) The only category of speech that the First Amendment does not protect is that of obscenity.
C) The only category of speech that the First Amendment does not protect is that of commercial speech.
D) Neither defamation, obscenity, nor commercial speech is protected by the First Amendment.
E) Neither defamation nor obscenity is protected by the First Amendment, but commercial speech that satisfies the requisite test is protected by the First Amendment.