What is the test for determining whether a court should compel a journalist to disclose his or her source information?

Select one:

a.Unless it is necessary in the interests of justice, so that justice cannot be done without it, journalists should not ordinarily be compelled to disclose source information.

b.Source information must be disclosed in trial where the court has determined it would constitute probative evidence.

c.Unless it is necessary in the interests of national security, preventing an immediate threat of harm to an individual, or a upholding the fairness of a trial, journalists' sources should never be disclosed.

d.Source information must be disclosed if the trial is a criminal trial.