This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
GFR is determined by the following 
Select and explain. 
A. Bowman capsule pressure, B. Hydrostatic pressure, C. Plasma oncotic pressure, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: GFR = K * EF ....... EF means effective pressure which depends on all pressures mentioned above. Ref: guyton and hall textbook of medical physiology 12 edition:464,465,466