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 drug used in petit mal seizures and has a narrow spectrum of antiepileptic activity is \nSelect and explain. \nA. Lamotrigine, B. Ethosuximide, C. Phenytoin, D. Primidone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ethosuximide and valproate are the drugs of choice for absence seizures and are more effective than lamotrigineReference: Katzung Pharmacology; 12th edition; Page no: 418', 'role': 'assistant'}]