The Nurse Needs to Awaken a Patient to Take Medication

The nurse needs to awaken a patient to take medication in the middle of the night.The patient has not had any sleeping medications or other preparations that would cause drowsiness.The nurse has to use vigorous stimulation to awaken the patient.What stage of sleep is this patient most likely in?

A) Stage 1,non-rapid eye movement (REM)
B) Stage 2,non-REM
C) Stage 3,non-REM
D) Stage 4,non-REM