This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Drug of choice for absent seizures \nSelect and explain. \nA. Clonezapam, B. Diazepam, C. Phenytoin, D. Valproate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Many children appear to have a genetic predisposition to absence seizures. In general, seizures are caused by abnormal electrical impulses from nerve cells (neurons) in the brain. Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]