Halides of alkaline earth metals from hydrates such as

 ${\mathrm{MgCl}}_2\cdot 6{\mathrm{H}}_2\mathrm{O},{\mathrm{CaCl}}_2\cdot 6{\mathrm{H}}_2\mathrm{O},{\mathrm{BaCl}}_2\cdot 2{\mathrm{H}}_2\mathrm{O}$, and ${\mathrm{SrCl}}_2\cdot 2{\mathrm{H}}_2\mathrm{O}$ .

This shows that halides of group II elements. 

• A

   are hydrophobic  in nature

• B

   act as dehydrating agents

• C

  can absorbs moisture from air

• D

  cannot absorbs moisture from air