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': 'A  25-years old female complains of discharge of blood from a single duct in her breast. The most appropriate treatment is \nSelect and explain. \nA. Incision and drainage, B. Microdochectomy, C. Radical mastectomy, D. Antibiotics', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This is a case of duct papilloma. Treatment is microdochectomy.', 'role': 'assistant'}]