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': '___________  percentage of Na+ is reabsorbed from ascending loop of henle via ___________ transporter. \nSelect and explain. \nA. 20, Na+ – H+ exchange, B. 40, Na+ - K+ - 2Cl– symporter, C. 30, Na+ – Cl– symporter, D. 20, Na – K- 2Cl–  symporter', 'role': 'user'}, {'content': 'Answer: D \nExplanation: % Na reabsorption\nSite\nMain mechanism\n\n\n60 – 70%\nPCT\nNa+ – H+ exchanger\n\n\n20 – 25%\nAscending loop of henle\xa0\nNa+\xa0– K+\xa0– 2Cl–\xa0symporter\n\n\n10 – 12%\nDCT\nNa+\xa0– Cl+\xa0symporter\n\n\n3 – 4%\nCollecting duct\nENAC channel', 'role': 'assistant'}]