$\alpha -D(+)$ Glucose and $\beta -D(+)$ Glucose are

The correct statement$(s)$ about the following sugars $X$ and $Y$ is(are):
$(A)$ $X$ 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 glycosidic linkages in $X$ and $Y$ are $\alpha$ and $\beta$,respectively
$(D)$ The glycosidic linkages in $X$ and $Y$ are $\beta$ and $\alpha$,respectively

Osazone formation involves only $2$ carbon atoms of glucose because of

Carbohydrates are stored in plants and animals in which of the following forms respectively?

How do you explain the presence of an aldehydic group in a glucose molecule?

Consider the following:
Statement-$I$ : Lactose is composed of $\alpha-D$-glucose and $\beta-D$-galactose.
Statement-$II$ : Lactose is a reducing sugar.
The correct answer is