A Nurse Appropriately Remains with a Patient Until After the Patient

A nurse appropriately remains with a patient until after the patient has swallowed narcotic medication because

A) The patient may rarely "cheek" the medication in an attempt to save it up and take an overdose later.
B) Narcotic medications pose extra safety risks because they depress respiration and lower blood pressure.
C) The patient may be afraid to take narcotic medication because of the risk for addiction.
D) All of the above.