Card 8 / 33: A 75 year old man is admitted to the intensive care unit with upper gastrointestinal bleeding. An upper endoscopy is performed urgently after the patient is resuscitated with intravenous fluids and packed red blood cells. There is a large ulcer in the duodenal bulb with a visible vessel. Endoscopic therapy is applied and the bleeding stops. He is put on intravenous pantoprazole. A rapid urease test on a mucosal biopsy from the gastric antrum is positive. Which of the following findings would one most likely find in this patient?
A) Reduced gastric acid production
B) Parietal cell antibodies
C) Normal gastric acid production
D) Normal gastric antral mucosa
E) Markedly elevated gastrin level after a meal

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