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: Surgery
[{'content': 'A 60 year old man with CA prostate with osteoblastic secondaries in pelvis and lumbar\nvertebra showed well differentiated Adenocarcinoma prostate on needle biopsy. First line of\ntreatment is \nSelect and explain. \nA. Proscavax vaccine, B. TURP, C. Radical prostatectomy, D. Harmonal ablation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Metastatic disease is treated by harmonal ablation.', 'role': 'assistant'}]