The nurse is preparing to provide care for a client diagnosed with peptic ulcer disease. Which pathophysiological characteristic will the nurse correctly associate with the patient's diagnosis?

A. Erosion is confined to the stomach and esophagus. Peptic ulcers affect the stomach and duodenum, not just the stomach and esophagus. B. A common cause is an infection from Helicobacter pylori. H. pylori is a major causative agent in both gastric and duodenal ulcers. C. Gastric ulcers occur more frequently than do peptic ulcers. Duodenal ulcers are actually more common than gastric ulcers. D. Surgery to increase mucous will heal the ulcerations. Ulcers are treated with acid suppression and H. pylori eradication; surgery is rare and does not "increase mucus."