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': "Recent first line management of trigeminal neuralgia: \nSelect and explain. \nA. Peripheral neurectomy., B. Anticonvulsant drugs'., C. Radio-frequency ablation., D. Diagnostic regional nerve block.", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]