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: Biochemistry
[{'content': 'Viscosity of synovial fluid depends upon - \nSelect and explain. \nA. N-acetyl galactosamine, B. N-acetyl glucosamine, C. Glucuronic acid, D. Hyaluronic acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Viscosity of synovial fluid is provided by hyaluronic acid.', 'role': 'assistant'}]