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': 'All are used in status epilepticus, except- \nSelect and explain. \nA. Phenytoin, B. Carbamazepine, C. Diazepam, D. Phenobarbitone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]