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': 'Carcinoma of the prostate arise from - \nSelect and explain. \nA. Central zone, B. Peripheral zone, C. Transitional zone, D. Periurethral zone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]