This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney & Ureturs, Subject name: Surgery
[{'content': 'Normal urine output is: \nSelect and explain. \nA. 500-800 ml, B. 1500-1800 ml, C. 2200-2500 ml, D. 3000-3200 ml', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: b (1500-1800 ml) Ref: Ganong, 22nd ed, p. 713* 180 L of fluid is filtered through the glomeruli each day, while the average daily urine volume is about 1 liter.* At least 87% of filtered water is reabsorbed* Oliguria - 24 hr urine output of <500 ml.* Anuria - complete absence of urine formation.* Polyuria - 24 hr urine out put >3 liters.', 'role': 'assistant'}]