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: Pharmacology
Heparin is - 
Select and explain. 
A. Polysaccharide, B. Lipoprotein, C. Monosaccharide, D. Polyenoic acid
A: Polysaccharide
Answer: A: Polysaccharide 
Explanation: Ans. is `a' i.e., Polysaccharide o Heparin is mucopolysaccharide.