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: Psychiatry
[{'content': 'For severe intractable obsessional neurosis the psychosurgery of choice is \nSelect and explain. \nA. Bifrontaltractotomy, B. Cingulotomy, C. Amygdalotomy, D. Temporal lobe lesion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Cingulotomy', 'role': 'assistant'}]