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: Anatomy
Ureters are identified during surgery by - 
Select and explain. 
A. Peristalsis d/t flow of urine, B. Rich arterial plexus, C. Relation to renal vein & artery, D. Relation to lumbar plexus
A: Peristalsis d/t flow of urine
Answer: A: Peristalsis d/t flow of urine 
Explanation: Ureters are muscular ducts situated retroperitoneally and are identified by peristalsis.