$\mathrm{Mg}>\mathrm{Be}>\mathrm{Na}>\mathrm{Li}$

$\mathrm{Li}>\mathrm{Be}>\mathrm{Mg}>\mathrm{Na}$

$\mathrm{Be}>\mathrm{Mg}>\mathrm{Li}>\mathrm{Na}$

$\mathrm{Li}>\mathrm{Mg}>\mathrm{Na}>\mathrm{Be}$

A-II, B-III, C-IV, D-I

A-IV, B-I, C-III, D-II

A-IV, B-III, C-II, D-I

A-III, B-IV, C-I, D-II

Both $X$ and $Y$ are paramagnetic in nature

$X$ is diamagnetic and $Y$ is paramagnetic in nature

$X$ is paramagnetic and $Y$ is diamagnetic in nature

Both $X$ and $Y$ are diamagnetic in nature