Which of the following compounds can make hydrates?

The correct options are
A $MgC{l}_2$
B $CaC{l}_2$
Compounds of alkaline earth metals are more extensively hydrated than those of alkali metals. $MgC{l}_2$ and
$CaC{l}_2$ exist as $MgC{l}_2.6H_{2}O$ and $CaC{l}_2.6H_{2}O$. NaCl and KCl do not form such hydrates.