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': 'Minimal reabsorption in kidney occurs for \nSelect and explain. \nA. Urea, B. Glucose, C. Na, D. HCO3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Minimal reabsorption for ureaRef: Ganong&;s review of medical physiology; 24th edition; page no; 682, 681', 'role': 'assistant'}]