When Admitting a Patient Who Has Just Arrived on the Unit

When admitting a patient who has just arrived on the unit with a severe headache,what should the nurse do first?

A) Complete only basic demographic data before addressing the patient's pain.
B) Inform the patient that the headache will be treated as soon as the health history is completed.
C) Medicate the patient for the headache before doing the health history and examination.
D) Take the initial vital signs and then address the headache before completing the health history.