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': 'The antiepilectic drug which does not produce enzyme induction is \nSelect and explain. \nA. Phenobarbitone, B. Sodium valproate, C. Phenytoin sodium, D. Carbamazepine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The four major enzyme-inducing AEDs (carbamazepine, phenytoin, phenobarbital and primidone) stimulate the metabolism and reduce the serum concentration of most other concurrently administered AEDs, most notably valproic acid , tiagabine , ethosuximide , lamotrigine , topiramate , REF : KD TRIPATHI 8TH ED.', 'role': 'assistant'}]