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
Action of truncal vagotomy is equal to that of 
Select and explain. 
A. Antacids, B. H2 blockers, C. Proton pump inhibitors, D. All of the above
C: Proton pump inhibitors
Answer: C: Proton pump inhibitors 
Explanation: (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.