This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Female & male reproductive system, rectum and anal canal, Subject name: Anatomy
[{'content': 'Most common site of prostatic carcinoma: \nSelect and explain. \nA. Anterior lobe, B. Median lobe, C. Posterior lobe, D. Central zone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Posterior lobe roughly corresponds to peripheral zone, which is the sub-capsular poion of the posterior aspect of the prostate gland that surrounds the distal urethra. 70-80% of prostatic cancers originate in this region. Median lobe- Benign Prostate Hyperophy Posterior lobe- Ca Prostate', 'role': 'assistant'}]