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': 'True about histology in infilterating lobular breast carcinoma - \nSelect and explain. \nA. Single file pattern, B. Pleomorphic cells in sheets, C. Cribriform pattern, D. Pin wheel pattern', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Histological hallmark of invasive lobular breast carcinoma is pattern of single infilterating tumor cells often only one cell in width or in loose clusters or sheets.', 'role': 'assistant'}]