Which of the following complex ions is expected to absorb visible light ? {At no. Zn = 30, Sc = 21, Ti = 22, Cr = 24)

Question

( A ) $[Ti(en)_2(NH_3)_2]^{4+}$
( B ) $[Sc(H_2O)_3(NH_3)_3]$
( C ) $[Cr(NH_3)_6]^{3+}$
( D ) $[Zn(NH_3)_6]^{2+}$