The Complexes Co(NH₃)₆³⁺ and Mo(CO)₆ Are Isoelectronic and Diamagnetic $\Delta$ In Both of These Complexes?(If Needed, Use the Following Equation:Spectrochemical

The complexes Co(NH₃) ₆³⁺ and Mo(CO) ₆ are isoelectronic and diamagnetic. The first complex is orange and the second complex is white. What can you deduce about the value of $\Delta$ in both of these complexes?(If needed, use the following equation:Spectrochemical Series
I^- < Br^- < Cl^- < F^- < OH^- < H₂O< NH₃ < en < NO₂^- < CN^- < CO)

A) $\Delta$ is larger in Mo(CO) ₆ than in Co(NH₃) ₆³⁺
B) $\Delta$ is 0 in Mo(CO) ₆
C) $\Delta$ is smaller in Mo(CO) ₆ than in Co(NH₃) ₆³⁺
D) $\Delta$ is the same in the two complexes
E) $\Delta$ is 0 in Co(NH₃) ₆³⁺