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 Insulinoma is \nSelect and explain. \nA. Glucagon, B. Sodium nitroprusside, C. Diazoxide, D. Mecasermin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Diazoxide is K+ channel opener, which is drug of choice for Insulinoma. It was used for hypertensive emergency but can lead to severe hypotension.', 'role': 'assistant'}]