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: Medicine
Which of the following best methods of urine collection is associated with least contamination? 
Select and explain. 
A. Suprapubic aspiration, B. Mid stream collection, C. Catheterization, D. Urine Bag specimen
A: Suprapubic aspiration
Answer: A: Suprapubic aspiration 
Explanation: Supra pubic aspiration of urine collection is associated with least contamination. Ref: Diseases of The Kidney and Urinary Tract, 8th Edition, Page 832; Essential Procedures for Practitioners in Emergency, Urgent And Primary Care Settings By Theresa M Campo, Kaith A Laffey, Page 285; Urological Emergencies in Clinical Practice By Hashim Hashim, John Reynard, Page 168