This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': 'Bloom Richardson staging is for? \nSelect and explain. \nA. Prostate cancer, B. Breast cancer, C. Ovarian cancer, D. Penile cancer', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Breast cancer(Ref Internet source)Bloom and Richardson grading for cancer breast is based on* Tubules formation* Nuclear pleomorphisms* Mitotic counts', 'role': 'assistant'}]