Which of the following statements is / are not true regarding glycogen ?
A) It is non reducing sugar
B) It has $\mathrm{\alpha }$ -1,4-glycosidic linkages only
C) It is an animal starch
D) The monomer units are glucose and mannose 

The carbohydrates are stored in animal body as glycogen. It is also known as animal starch because its structure is similar to amylopectin and is rather more highly branched. It is a polymer of glucose units linked by a -(1,4) and a-(1,6)- glycosidic bonds.