A Journalist Who Claims a Constitutional Right Not to Reveal

A journalist who claims a constitutional right not to reveal sources to a grand jury has:

A) a full First Amendment privilege, per the Supreme Court in Branzburg v. Hayes
B) a qualified First Amendment privilege, per the Supreme Court in Branzburg v. Hayes
C) no constitutional privilege, per the Supreme Court in Branzburg v. Hayes
D) no constitutional privilege but a federal statutory privilege, per the Federal Journalists Protection Act of 2017
E) none of the above