Which of the Following Should the Nurse Teach a Patient

Which of the following should the nurse teach a patient to assist him or her with a sleep disturbance?

A) If you are not asleep within one hour of going to bed,get out of the bed.
B) Exercise an hour before going to bed.
C) Have a glass of wine or a beer just before bedtime.
D) Avoid caffeine and alcohol for at least four hours before bedtime.