Attorney-Client Privilege Would Be Invoked in Which of the Following

Attorney-client privilege would be invoked in which of the following scenarios:

A) A husband,who is an attorney,refuses to disclose information shared with him by his wife in a confidential email..
B) A physician refuses to reveal whether his patient is truly amnesiac.
C) An attorney refusing to disclose an admission of guilt provided by his client during a conversation in his office.
D) A rabbi refusing to disclose the crime confessed to him by a penitent
E) A district attorney refusing to turn over evidence that he knows will cause the government to lose a case against a serial polluter.