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': 'Minimum reabsorption through renal tubule, among the following \nSelect and explain. \nA. Glucose, B. HCO3, C. Urea, D. Uric acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Urea is a toxic waste product and it reabsorbed in minimal level.Ref: Ganong&;s Review of Medical Physiology; 24th edition; page no: 678', 'role': 'assistant'}]