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 antiepileptic Drugs Which does not produce enzymes induction is: \nSelect and explain. \nA. Phenobarbitone, B. Sodium valproate, C. Phenytoin sodium, D. Carbamazepine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref: KDT 6/e p27,408 Most anticonvulsants are enzyme inducers except valproate (inhibitor).', 'role': 'assistant'}]