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': 'The drug of choice for absence seizure \nSelect and explain. \nA. Valproate, B. Phenytoin, C. Carbamazepine, D. Pregabalin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Valproate is the drug of choice for absence seizure.', 'role': 'assistant'}]