A nurse in charge in the surgical intensive care unit notes that a number of clients do not seem to be responding to morphine that was administered for pain. Later in the evening the nurse finds a staff nurse dozing in the nurses' lounge. When awakened, the staff nurse appears uncoordinated and drugged, with slurred speech. What should the nurse in charge do?a. Ask the nurse manager to be present before confronting the staff nurse.b. Ask other staff members whether they have noticed anything unusual lately.c. Tell the staff nurse that everyone now knows who has been stealing the morphine.d. Arrange to secretly observe the staff nurse the next time the staff nurse administers morphine.