Given below are two statements.
Statement I: Maltose has two $\alpha$-D-glucose units linked at $\mathrm{C}_1$ and $\mathrm{C}_4$ and is a reducing sugar.
Statement II: Maltose has two monosaccharides : $\alpha$-D-glucose and $\beta$-D-glucose linked at $\mathrm{C}_1$ and $\mathrm{C}_6$ and it is a non-reducing sugar.
In the light of the above statements, choose the correct answer from the options given below.