After Giving a Patient the Initial Dose of Oral Labetalol

After giving a patient the initial dose of oral labetalol (Normodyne) for treatment of hypertension, which action should the nurse take?

A) Encourage oral fluids to prevent dry mouth or dehydration.
B) Instruct the patient to ask for help if heart palpitations occur.
C) Ask the patient to request assistance when getting out of bed.
D) Teach the patient that headaches may occur with this medication.