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
Not absorbed from the PCT 
Select and explain. 
A. Na+, B. Phosphate, C. HCO3-, D. H+
D: H+
Answer: D: H+ 
Explanation: PCT is the convoluted poion of the veebrate nephron lying between Bowman&;s capsule and the loop of Henle; functions in the resorption of sugar, sodium and chloride ions, and water.Ref: Ganong&;s review of medical physiology; 24th edition; page no; 685