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
[{'content': 'Absorption of all occurs in PCT except \nSelect and explain. \nA. PO4, B. Glucose, C. HCO3-, D. H+', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In PCT there is maximum secretion of H+, around 4200 mEq/day Ref: Ganong -23rd edition, Page 665', 'role': 'assistant'}]