The glycosidic linkage present in sucrose is between
$C_1$ of $\alpha$-glucose and $C_2$ of $\beta$-fructose
$C_1$ of $\alpha$-glucose and $C_4$ of $\alpha$-glucose
$C_1$ of $\beta$-galactose and $C_4$ of $\alpha$-glucose
$C_1$ of $\alpha$-glucose and $C_4$ of $\beta$-fructose
