This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification of carbohydrate, Subject name: Biochemistry
Which of the following is a component of Chitin polysaccharide -: 
Select and explain. 
A. Ascorbic acid, B. Glucosamine, C. Synovium, D. Glucuronic acid
B: Glucosamine
Answer: B: Glucosamine 
Explanation: Option b: Glucosamine is the component of chitin Chitin Homopolysaccharide made up of N-Acetyl Glucosamine in b(1-->4) linkage Present in the cell wall of fungi & exoskeleton of ahropods (insects). Second most abundant polysaccharide in nature (Cellulose is the first most abundant)