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': "Which carcinoma breast is not invasive- \nSelect and explain. \nA. Comedo carcinoma, B. Schirrhous carcinoma, C. Lobular carcinoma, D. Paget's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]