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: Pathology
[{'content': 'All of the following are invasive carcinoma of breast except -a) Comedo carcinomab) Colloid carcinomac) Lobular carcinoma in situd) Medullary carcinoma \nSelect and explain. \nA. a, B. bc, C. ad, D. ac', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Comedocarcinoma and lobular carcinoma in situ are in situ carcinomas ( not invasive carcinoma )', 'role': 'assistant'}]