The complex that shows Facial – Meridional isomerism is

Ma₃b₃ type complexes show Facial - Meridional isomerism

$$\begin{gathered} \text{ (i) }\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Cl}}_3\right]\Rightarrow {\mathrm{Ma}}_3{\mathrm{b}}_3 \\ \text{ (ii) }{\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]}^{+}\Rightarrow {\mathrm{Ma}}_4{\mathrm{b}}_2 \\ \begin{array}{l}\text{ (iii) }{\left[\mathrm{Co}(\mathrm{en}{)}_3\right]}^{3+}\Rightarrow \mathrm{M}(\mathrm{AA}{)}_3\\ \text{ (iv) }{\left[\mathrm{Co}(\mathrm{en}{)}_2{\mathrm{Cl}}_2\right]}^{+}\Rightarrow \mathrm{M}(\mathrm{AA}{)}_2{\mathrm{b}}_2\\ \text{ a, }\mathrm{b},={\mathrm{NH}}_3,{\mathrm{Cl}}^{-}\end{array} \end{gathered}$$

AA = en