Which of the following pair of ions are coloured? (JEE Mains 23/01/2025, Shift - I, Memory Based )

\({\mathrm{Ti}}^{4+},{\mathrm{V}}^{3+}\)

\({\mathrm{Cr}}^{2+},{\mathrm{Cu}}^{2+}\)

\({\mathrm{Cr}}^{3+},{\mathrm{Ni}}^{2+}\)

\({\mathrm{Mn}}^{3+},{\mathrm{Ni}}^{2+}\)