The six-membered cyclic structure of glucose is called pyranose structure ( $\alpha$ - or $\beta-$ ), in analogy with pyran which is a cyclic organic compound with one oxygen and five carbon atoms in the ring.
Hence, ring $(i)$ is pyranose.
The ring $(i)$ is pyranose with $\alpha$-glycosidic linkage which means the oxide linkage which connects the monosaccharide units in polysaccharide below the plane.
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then which one is not correct
Statments $I:$ Maltose has two $\alpha$-D-glucose units linked at $C _{1}$ and $C _{4}$ and is a reducing sugar.
Statement $II:$ Maltose has two monosaccharides: $\alpha$-D-glucose and $\beta$-D-glucose linked at $C_{1}$ and $C_{6}$ and it is a non-reducing sugar.
In the light of the above statements, choose the correct answer from the options given below.