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': "Follwing are true of Paget's disease of breast except? \nSelect and explain. \nA. Usually bilateral, B. Associated intraductual carcinoma, C. Prognosis good in absence of lump, D. Treatment simple mastectomy with axillary clearance", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. Usually bilateral", 'role': 'assistant'}]