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 most reliable urine specimen is obtained by? 
Select and explain. 
A. Urethral catheterization, B. Catheter aspiration, C. Midstream voiding, D. Suprapubic aspiration
D: Suprapubic aspiration
Answer: D: Suprapubic aspiration 
Explanation: Ans. is 'd' i.e., Suprapubic aspiration