This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Histamine, 5-HT and PGs, Subject name: Pharmacology
[{'content': 'Drug of choice for acute severe migraine is: \nSelect and explain. \nA. Methysergide, B. Sumatriptan, C. Ergotamine, D. Propranolol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Drug of choice for mild to moderate attacks of migraine is NSAIDs like paracetamol and aspirin etc. Drug of choice for acute severe migraine are triptans like sumatriptan. Drug of choice for prophylaxis of migraine is propranolol.', 'role': 'assistant'}]