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
For Carcinoma of the prostate the commonest site is - 
Select and explain. 
A. Anterior zone, B. Peripheral zone, C. Central zone, D. Transitional zone
B: Peripheral zone
Answer: B: Peripheral zone 
Explanation: Ans. is 'b' i.e., Peripheral zone o Carcinoma arise most commonly from ---- Peripheral zoneo Benign prostatic hyperplasia arise from---- Transitional zone