This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urethra and penis, Subject name: Surgery
[{'content': 'What is the location of stricture in the given RGU? \nSelect and explain. \nA. Membranous urethra, B. Bulbar urethra, C. Penile urethra, D. Prostatic urethra', 'role': 'user'}, {'content': 'Answer: B \nExplanation: - IOC for diagnosing posterior urethral stricture - MCU- IOC for diagnosing anterior urethral stricture- RGU- Adequate evaluation of posterior and anterior urethral stricture- RGU+ MCU Retrograde urethrogram', 'role': 'assistant'}]