Which row shows the correct oxidation state and co-ordination number of cobalt in [Co(NH3)4Cl2]Cl[\text{Co}(\text{NH}_3)_4\text{Cl}_2]\text{Cl}[Co(NH3)4Cl2]Cl?
Oxidation state: +2+2+2, co-ordination number: 444
Oxidation state: +2+2+2, co-ordination number: 666
Oxidation state: +3+3+3, co-ordination number: 444
Oxidation state: +3+3+3, co-ordination number: 666