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 durgs are used in prophylaxis of migraine, except \nSelect and explain. \nA. Propanolol, B. Flunarizine, C. Tapiramate, D. Levetiracetam', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The drugs has been approved by FDA for the prophylactic management of migraine are propranolol,timolol,sodiumvalproate,topiramate,and methysergide *Other drugs appear to display prophylactic efficacy includes amitriptyline,noriptyline,flunarizine,phenelzine,gabapentin,topiramate,and cycloheptadine *Among these phenelzine and methysergide are usually preserved for recalcitrant cases . Ref Harrison20th edition pg 2355', 'role': 'assistant'}]