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: Surgery
[{'content': 'Operations for varicose veins are best accomplished by- \nSelect and explain. \nA. Stripping, B. Multiple subcutaneos ligatures, C. Subfascial ligatures, D. Division and ligation at the superficial venous system', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]