$(A)$ ${X}$ is a reducing sugar and ${Y}$ is a non-reducing sugar
$(B)$ ${X}$ is a non-reducing sugar and ${Y}$ is a reducing sugar
$(C)$ The glucosidic linkages in ${X}$ and ${Y}$ are $\alpha$ and $\beta$, respectively
$(D)$ The glucosidic linkages in ${X}$ and ${Y}$ are $\beta$ and $\alpha$, respectively
proteins $\xrightarrow{{enzyme{\text{ }}\left( A \right)}}$ polypeptides $\xrightarrow{{enzyme{\text{ }}\left( B \right)}}$ amino acids,
are respectively

Arginine, Phenylalanine, Aspartic acid, Cysteine, Histidine, Valine, Proline