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
[{'content': 'Function of I cells of kidney - \nSelect and explain. \nA. Na+ reabsorption, B. Cl- reabsorption, C. H+ secretion, D. K+ secretion', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is'c'i.e., H+ secretionCollecting duct has :-Principal cells (P cells), which are involved in Na+ reabsorption and ADH stimulated water reabsorption.Intercalated cells (I cells) which are concerned with acid (H.) secretion and HCO transPo", 'role': 'assistant'}]