This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
On exeion urine stream increases in - 
Select and explain. 
A. Prostate enlargement, B. Marion's disease, C. Post. urethral valves, D. Urethral stricture
D: Urethral stricture
Answer: D: Urethral stricture 
Explanation: Ans. is 'd' i.e., Urethral stricture