This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
[{'content': 'Action of truncal vagotomy is equal to that of \nSelect and explain. \nA. Antacids, B. H2 blockers, C. Proton pump inhibitors, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Proton pump inhibitors> In addition to Truncal vagotomy, the antrum of stomach was removed, thus eradicating the source of gastrin, and the gastric remnant was joint to the duodenum.> Proton pump inhibitors can effectively render a patient achlorhydric and all benign ulcers will heal using these drugs.', 'role': 'assistant'}]