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
Which of the following is not a heteropolysaccharide? 
Select and explain. 
A. Hyaluronic acid, B. Chondroitin sulfate, C. Heparan sulfate, D. Inulin
D: Inulin
Answer: D: Inulin 
Explanation: None