Pick up the incorrect statement from the following.

A. Glucose exists in two different crystalline forms, $$\alpha {\text{ - }}D{\text{ - }}$$ glucose and $$\beta {\text{ - }}D{\text{ - }}$$ glucose.

B. Cyclic structure of $$\alpha {\text{ - }}D{\text{ - }}$$ glucose and $$\beta {\text{ - }}D{\text{ - }}$$ glucose is called pyranose structure.

C. $$\alpha {\text{ - }}D{\text{ - }}$$ glucose and $$\beta {\text{ - }}D{\text{ - }}$$ glucose are anomers.

D. Cellulose is a branched chain polysaccharide made up of only $$\alpha {\text{ - }}$$glucose units.