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
[{'content': 'Ureters are identified during surgery by - \nSelect and explain. \nA. Peristalsis d/t flow of urine, B. Rich arterial plexus, C. Relation to renal vein & artery, D. Relation to lumbar plexus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ureters are muscular ducts situated retroperitoneally and are identified by peristalsis.', 'role': 'assistant'}]