Which of the following does not have optical isomer?
CoNH33Cl3
Coen3Cl3
Coen2Cl2Cl
CoenNH32Cl2Cl
[Co(NH3)3Cl3] does not have optical isomers because optical isomerism is shown by the type [M(AA)X2Y2], [M(AA)3], [M(AA)2X2].