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
Most common cause of urethral structure is 
Select and explain. 
A. Infection, B. Trauma, C. Conjenital, D. None of the above
B: Trauma
Answer: B: Trauma 
Explanation: Most common cause of urethral structural is trauma >> infection.