Why Should the Nurse Teach a Patient Who Is Taking

Why should the nurse teach a patient who is taking labetalol (Normodyne) for treatment of hypertension to change position slowly?

A) The medication blocks the vasoconstrictive and sodium-retaining properties initiated by the presence of angiotensin.
B) The medication paralyzes the smooth muscle of blood vessels,and they cannot constrict in response to sympathetic stimulation.
C) The medication blocks the normal sympathetic nervous system response to position changes in vasoconstriction and increased heart rate.
D) The medication blocks the movement of calcium into the cardiac cells,and cardiac output cannot increase in response to decreased BP.