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 clinical practice, Glomerular Filtration Rate (GFR) is estimated using the plasma clearance value of \nSelect and explain. \nA. Inulin, B. PAH, C. Glucose, D. Creatinine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]