A patient with a spinal cord lesion at T4 tells the nurse that he has a headache and feels flushed. The blood pressure is significantly elevated to 190/100. The first action by the nurse is to:

Recheck all of the patient's vital signs.

Elevate the patient's knees and lower the head of the bed.

Elevate the head of the bed immediately and notify the provider.

Administer PRN Tylenol for the patient's headache.