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
[{'content': 'The most reliable urine specimen is obtained by? \nSelect and explain. \nA. Urethral catheterization, B. Catheter aspiration, C. Midstream voiding, D. Suprapubic aspiration', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Suprapubic aspiration", 'role': 'assistant'}]