This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: D.O.C, Subject name: Pharmacology
[{'content': 'Drug of choice for absence seizure is? \nSelect and explain. \nA. Clonezapam, B. Diazepam, C. Phenytoin, D. Valproate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) ValproateRef. KDT 6/e, p 408', 'role': 'assistant'}]