The following complexes $$[CoCl(NH_3)_5]^{2+}$$ (A), $$[Co(CN)_6]^{3-}$$ (B), $$[Co(NH_3)_5(H_2O)]^{3+}$$ (C), $$[Cu(H_2O)_4]^{2+}$$ (D). The correct order of A, B, C and D in terms of wavenumber of light absorbed is :

A

C < D < A < B

B

B < C < A < D

C

A < C < B < D

D

D < A < C < B