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: Physiology
Normal GFR is ? 
Select and explain. 
A. 125 ml/min, B. 90 ml/min, C. 60 ml/min, D. 150 ml/min
A: 125 ml/min
Answer: A: 125 ml/min 
Explanation: Ans. is 'a' i.e., 125 ml/min In man, resting glomerular filtration rate is about 125 ml/min (180L/day), the renal plasma flow being about 600 ml/min. Thus about one-fifth (20%) of plasma passing through kidney is filtered, i.e., fraction of renal plasma flow that is filtered (filtration fraction) is 0-2.