NEET 2020 Chemistry question on Hydrogen and s-Block Elements

1. A.
   Only $\text{NaCl}$
2. B.
   Only $\text{MgCl}_2$
3. C.
   $\text{NaCl}$, $\text{MgCl}_2$ and $\text{CaCl}_2$
4. D.
   Both $\text{MgCl}_2$ and $\text{CaCl}_2$

[NEET 2020]