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 is a fructosan? 
Select and explain. 
A. a) Pectin, B. b) Inulin, C. c) Chitin, D. d) Glycogen
B: b) Inulin
Answer: B: b) Inulin 
Explanation: - Iulin(Fructosan)- Homopolysaccharide of Fructose in b 2 -------> 1 linkage. Used in clearance test to determine GFR.