The correct statement about the following disaccharide is :

 

(A) Ring I has $\mathrm{\alpha }$ -glycosidic link and is pyranose.
The term "pyranose structure" (or "or") refers to the six-membered cyclic structure of glucose in comparison to the cyclic chemical molecule pyran, which has one oxygen and five carbon atoms in its ring.
Ring I is hence pyranose.
The oxide linkage that joins the monosaccharide units in polysaccharides below the plane makes up the ring I which is pyranose.