The hybridisation and shape of the $[Pt(Cl)_4]^{2-}$ is

Question

$\begin{array}{1 1}(a)\;sp^2d\; and \;Square\; planar&(b)\;sp^2d\; and\; Square\;pyramidal\\(c)\; dsp^2\; and\; Square\; pyramidal&(d)\;dsp^2\; and\; Square\; planar\end{array}$