This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Prostate Cancer, Subject name: Surgery
[{'content': 'For Carcinoma of the prostate the commonest site is - \nSelect and explain. \nA. Anterior zone, B. Peripheral zone, C. Central zone, D. Transitional zone', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Peripheral zone o Carcinoma arise most commonly from ---- Peripheral zoneo Benign prostatic hyperplasia arise from---- Transitional zone", 'role': 'assistant'}]