A Journalist's Claim of a First Amendment-Based Privilege

A journalist's claim of a First Amendment-based privilege:

A) is unlikely to be successful when a grand jury demands sources or information
B) is unlikely to be successful if the journalist is asked to testify about criminal activity the journalist witnessed
C) is unlikely to be successful when asked to produce information not covered by a promise of confidentiality
D) all of the above
E) none of the above