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
The commonest cause of urethral stricture in a young person is - 
Select and explain. 
A. Trauma, B. Gonococcal, C. Syphilis, D. Tuberculosis
A: Trauma
Answer: A: Trauma 
Explanation: Post gonococcal stricture is less common since the introduction of effective antibiotic.