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: Pediatrics
In children renal failure is defined as 
Select and explain. 
A. Urine output less than 0.5ml/kg/hr for 8hr, B. estimated creatinine clearance decrease by 50%, C. Urine output less than 0.3ml/kg/hr for 24hr, D. Loss of renal function > 3 months
C: Urine output less than 0.3ml/kg/hr for 24hr
Answer: C: Urine output less than 0.3ml/kg/hr for 24hr 
Explanation: None