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: Pharmacology
[{'content': "Drug of choice for Zollinger-Ellison syndrome aEUR' \nSelect and explain. \nA. Antihistaminics, B. Proton lump inhibitors, C. Dopamine agonists, D. Antacids", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Proton pump inhibitors "Proton pump inhibitors are the drug of choice for Zollinger Ellison syndrome; they have decreased the need for total gastrectomy".', 'role': 'assistant'}]