A Patient Asks the Nurse, "Why Has My Primary Care

A patient asks the nurse, "Why has my primary care physician ordered an antidepressant for me? I'm not depressed. I'm just in pain." The nurse could appropriately explain:

A) "It was ordered because it is known to potentiate the pain medication that you are taking."
B) "Anyone who is suffering from pain will eventually begin to suffer from depression, so your physician wants to prevent that."
C) "Everyone experiences depression at one time or another."
D) "I guess your primary care physician must have misunderstood you. I'll talk to the physician later."