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': 'In a healthy individual on a normal diet, which of the following ion is completely absorbed in tubules \nSelect and explain. \nA. Na+, B. K+, C. Cl-, D. HCO3-', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Total reabsorption in tubules\nGlucose- 100%\nAmino acids- 100%\nHCO3-- 100%\nNa+- 99.4%\nK+- 93.3%\nCl-- 99.2%', 'role': 'assistant'}]