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': 'Most common site of development of carcinoma of prostate is \nSelect and explain. \nA. Central zone, B. Transitional zone, C. Peripheral zone, D. B + C', 'role': 'user'}, {'content': 'Answer: C \nExplanation: For BPH - transitional zone is most commonly involved\nFor carcinomma - peripheral zone is most commonly involved.', 'role': 'assistant'}]