The complex that shows Facial – Meridional isomerism is:
\( \left[ \mathrm{Co(NH_3)_4Cl_2} \right]^+ \)
\( \left[ \mathrm{Co(en)_2Cl_2} \right]^+ \)
\( \left[ \mathrm{Co(NH_3)_3Cl_3} \right] \)
\( \left[ \mathrm{Co(en)_3} \right]^{3+} \)