This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': '1st drug to be used in absence seizures \nSelect and explain. \nA. Phenytoin, B. BZD, C. Valproate, D. Carbamazepine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]