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 Zollinger Ellison syndrome (ZES) is - \nSelect and explain. \nA. PPI, B. Somatostatin analogues, C. Streptozocin, D. Sucralfate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]