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: Medicine
The term' end stage renal disease (ESRD)' is considered appropriate when GFR falls to- 
Select and explain. 
A. 50% of normal, B. 25% of normal, C. 10 - 25% of normal, D. 5 - 10% of normal
D: 5 - 10% of normal
Answer: D: 5 - 10% of normal 
Explanation: None