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': 'Which Mucopolysaccharide does not contain Uronic acid \nSelect and explain. \nA. Heparin, B. Dermatan sulphate, C. Keratan sulphate, D. Hyaluronic acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Keratan sulphate has N-acetyl glucosamine and galactose. It does not contain uronic acid.\nIt general all Mucopolysaccharides, contain a disaccharide repeat unit having aminosugar and Uronic acid.', 'role': 'assistant'}]