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
How to increase reabsorption of iso-osmolar fluid from glomerular filterate? 
Select and explain. 
A. Increased peritubular capillary pressure, B. Decreased osmotic pressure in peritubular capillaries, C. Increased coicomedullary osmotic gradient, D. Increased filtered load
D: Increased filtered load
Answer: D: Increased filtered load 
Explanation: Ans. is 'd' i.e., Increased filtered load(Ref: Principles of medical physiology p.786]Glomerulotubular balance refers to the fact that the total rate of reabsorption increases as the filtered load increases, even though the percentage of GFR reabsorbed in the proximal tubules remains relatively constant about 65%