The correct statement about the following disaccharide is:

Options

A. Ring `(a)` is pyranose with `alpha-`glycosidic link.
B. Ring `(a)` is furanose with `alpha-`glycosidic link.
C. Ring `(b)` is furanose with `alpha-`glycosidic link.
D. Ring `(b)` is pyranose with `beta-`glycosidic link.

Answer

A

Explanation

Ring `(a)` is pyranose (six-membered ring) whose anomeric `C_(1)` atom and `alpha` (below the plane) is joined with groups at `C-5` of ring `(b)` (furanose ring i.e., five-membered ring).