Aluminium chloride exists as dimer, ${\mathrm{Al}}_2{\mathrm{Cl}}_6$, in solid state as well as in solution of non-polar solvent such as benzene. When dissolved in water it gives

• A

  ${\mathrm{Al}}_2{\mathrm{O}}_3 + 6\mathrm{HCl}$

• B

  ${\left[\mathrm{Al}{\left(\mathrm{OH}\right)}_6\right]}^{3+} + 3\mathrm{HCl}$

• C

  ${\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+} + 3{\mathrm{Cl}}^{-}$

• D

  ${\mathrm{Al}}^{3+} + 3{\mathrm{Cl}}^{-}$