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
What is the location of stricture in the given RGU? 
Select and explain. 
A. Membranous urethra, B. Bulbar urethra, C. Penile urethra, D. Prostatic urethra
B: Bulbar urethra
Answer: B: Bulbar urethra 
Explanation: - 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