A metal, M forms chlorides in its $+2$ and $+4$ oxidation states. Which of the following statements about these chlorides is correct?

According to Fajans' Rules, for a given anion, a higher positive charge on the cation leads to greater polarization of the anion, resulting in more covalent character.${\text{M}}^{4+}$ has a higher charge and smaller size than ${\text{M}}^{2+}$.Therefore, ${\text{MCl}}_4$ is more covalent and ${\text{MCl}}_2$ is more ionic.Covalent compounds (${\text{MCl}}_4$) are generally more volatile and more soluble in organic solvents like ethanol.Higher oxidation state halides are also more easily hydrolysed.