Incorrect statements in the following
A) All square planar complexes are optically active
B) All square planar complexes exhibit geometrical isomerism
C)  $\left[{\mathrm{Ma}}_6\right],\left[{\mathrm{Mab}}_5\right]$ octahedral complex can exhibit geometrical isomerism
D) Tetrahedral complexes of type [Mabcd] are optically active