Which of the following will have maximum stabilization due to crystal field?
\( [\mathrm{Ti(H_2O)_6}]^{3+} \)
\( [\mathrm{Co(H_2O)_6}]^{2+} \)
\( [\mathrm{Co(CN)_6}]^{3-} \)
\( [\mathrm{Cu(NH_3)_4}]^{2+} \)
