The Physician Orders IV Ranitidine (Zantac)every 6 Hours for a Patient

The physician orders IV ranitidine (Zantac) every 6 hours for a patient with an acute exacerbation of his chronic peptic ulcer disease.As the nurse administers the drug,the patient asks about it,saying that the only ulcer drug he had been given IV before was cimetidine (Tagamet) .In responding to the patient,what should the nurse explain?

A) Both drugs neutralize stomach acid,but ranitidine has fewer side effects than does cimetidine.
B) Ranitidine and cimetidine work the same way to decrease the effect of histamine and decrease acidity.
C) Ranitidine blocks histamine receptors to decrease acid production,but cimetidine acts on the nervous system to decrease gastric motility and secretions.
D) Cimetidine creates a protective pastelike complex covering the ulcer during healing,whereas ranitidine coats the entire stomach and duodenum.