What is the electron configuration of the \({\text{C}}{{\text{r}}^{2 + }}\) ion?

A.     \({\text{[Ar]3}}{{\text{d}}^{\text{5}}}{\text{4}}{{\text{s}}^{\text{1}}}\)

B.     \({\text{[Ar]3}}{{\text{d}}^{\text{3}}}{\text{4}}{{\text{s}}^{\text{1}}}\)

C.     \({\text{[Ar]3}}{{\text{d}}^{\text{6}}}{\text{4}}{{\text{s}}^{\text{1}}}\)

D.     \({\text{[Ar]3}}{{\text{d}}^{\text{4}}}{\text{4}}{{\text{s}}^{\text{0}}}\)

D