Which of the following hydrate isomer of CrCl₃ .6H₂0 absorb shorter wavelength in visible spectrum ?

$\text{ Splitting energy }\propto {\mathrm{\Delta }}_{\mathrm{abs}}\propto \frac{1}{{\mathrm{\lambda }}_{\mathrm{abs}}}$
${\mathrm{H}}_2\mathrm{O}\text{ has more splitting energy than }{\mathrm{Cl}}^{-}\text{, therefore }\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_3\text{ absorbs shorter wave length. }$