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: Pathology
[{'content': 'The latest drug of the choice in the management in trigeminal neuralgia is: \nSelect and explain. \nA. Valproic acid, B. Carbamazepine, C. Dipnen hydantoin, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]