The Nurse Is Educating a Client in Preparation for Discharge

The nurse is educating a client in preparation for discharge from the hospital when the client breaks down crying, saying that the health care provider thinks she is crazy because he diagnosed her with a functional disorder.  Which statement would be the best reply to this client?

A) "Functional disorder is a general diagnosis for a genuine medical issue that medical science does not yet fully understand."
B) "I am very sorry to hear this, but are you sure that's what he meant?"
C) "The health care provider does not know what he's talking about.  I'll give you the information my health care provider used."
D) "Why do you think he said that?"