This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'All of the following drugs can be used for the prophylaxis of migraine except- \nSelect and explain. \nA. Propranolol, B. Sumatriptan, C. Amitriptyline, D. Flunarizine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: K.D Trip athu essentials of medical pharmacology 7th edition Drugs for prophylaxis of migraine are beta blockers (propanalol),TCA(amitriptyline),calciumchanneblockers(verapamil,flunarizine),anti convulsant(topiramate) *Sumatriptan used as treatment for acute attacks of migraine .', 'role': 'assistant'}]