This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
[{'content': 'Lumbar sympathectomy is the treatment for \nSelect and explain. \nA. Trophic ulcer, B. Distal ischaemia affecting the skin of the toes with rest pain, C. Arteriovenous fistula, D. Diabetic neuropathy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Distal ischaemia affecting the skin of the toes with rest pain', 'role': 'assistant'}]