This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Predominantly osteoblastic metastasis is seen in ? \nSelect and explain. \nA. Renal cell carcinoma, B. Prostate carcinoma, C. Breast carcinoma, D. Thyroid carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bone Metastasis Purely osteolytic Mostly osteolytic Mostly osteoblastic Purely osteoblastic Kidney (expansile) Thyroid Lung GI tumors Breast Seminoma Carcinoid Neurogenic tumors Uterus and ovary Urinary Bladder Prostate', 'role': 'assistant'}]