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': 'Which of the following cells are responsible for acid secretion in kidney? \nSelect and explain. \nA. I cells, B. P cells, C. Mesangial cells, D. Pericytes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Intercalated (I cells) are present in late DCT & coical collecting ducts secrete H+ ions and reabsorb K+ ions. Ref: Ganong 25th ed/page 681', 'role': 'assistant'}]