A Postpartum Patient Who Received Epidural Morphine Prior to a Cesarean

A postpartum patient who received epidural morphine prior to a cesarean birth is concerned about a severe headache that has persisted for several days. What should the nurse suggest to this patient?
Note: Credit will be given only if all correct choices and no incorrect choices are selected.

A) Ingest fluids with caffeine
B) Engage in moderate exercise
C) Increase the intake of all fluids
D) Lie in bed in a quiet dark room
E) Restrict the intake of warm fluids