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: Medicine
All of the following drugs are used in prophylaxis of migraine, except - 
Select and explain. 
A. Propanolol, B. Flunarizine, C. Tapiramate, D. Levetiracetam
D: Levetiracetam
Answer: D: Levetiracetam 
Explanation: None