In Which of the Following Situations Is a Signed Consent

In which of the following situations is a signed consent form required before disclosing patient information?

A) A medical assistant calls a patient's referring physician with current test results.
B) A physician calls the referral laboratory and asks for his patient's pathology report.
C) The health department calls to verify the treatment of a twenty-three-year-old woman for chlamydia.
D) A 15-year-old girl's mother calls the office and asks for the results of her daughter's Monospot test.
E) A patient's husband calls the office and asks for the results of his wife's amniocentesis.