After Undergoing Dural Puncture While Receiving Epidural Pain Medication,a Patient

After undergoing dural puncture while receiving epidural pain medication,a patient reports a headache.Which action can help alleviate the patient's pain?

A) Encourage the client to ambulate to promote flow of spinal fluid.
B) Offer caffeinated beverages to constrict blood vessels in his head.
C) Encourage coughing and deep breathing to increase CSF pressure.
D) Restrict oral fluid intake to prevent excess spinal pressure.