The U.S. Supreme Court has held that a journalist may be forced to testify or identify a confidential source only if
A. here is a probable cause to believe the journalist has clearly relevant information regarding a specific probable violation of law.
B. the information cannot be obtained in some other way that doesn't so heavily infringe on the First Amendment.
C. there is a compelling and overriding interest in the information.
D. All of the above.