This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Treatment of choice for ZES : \nSelect and explain. \nA. PPI, B. Somatostatin analogues, C. Streptozocin, D. Sucralfate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (PPI) PPIs are the treatment of choice for Zollinger - Ellison Syndrome and have decreased the need for total gastrectomy. -', 'role': 'assistant'}]