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': "Nottingham Histologic score doesn't include? \nSelect and explain. \nA. Tubule formation, B. Nuclear pleomorphism, C. Mitotic rate, D. Presence or absence of mets.", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Nottingham Histologic score is used for grading invasive carcinoma of breast.\xa0\nOption a, b and c are used to calculate the score.', 'role': 'assistant'}]