Which of the following statements is/ are true for $\left[\mathrm{Pt}\left({\mathrm{NH}}_3\right)\left({\mathrm{H}}_2\mathrm{O}\right)(\mathrm{Cl}{)}_2\right]$? 

Geometrical isomerism is present in the form of cis and trans isomers in the compound $\left[\mathrm{Pt}\left({\mathrm{NH}}_3\right)\left({\mathrm{H}}_2\mathrm{O}\right)(\mathrm{Cl}{)}_2\right]$.
Platinum has an oxidation state of +2 and an outer electronic configuration of $5d^8$.
Square planar geometry is produced via the $ds{p}^2$ hybridization of platinum.
The molecule is diamagnetic and all of its electrons are coupled.
Hence, options A, B and D are correct.