Which species has the electron configuration of ${\text{1}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{s}}^{\text{2}}}{\text{2}}{{\text{p}}^{\text{6}}}{\text{3}}{{\text{s}}^{\text{2}}}{\text{3}}{{\text{p}}^{\text{6}}}{\text{3}}{{\text{d}}^{\text{8}}}$?

A.     Ni

B.     ${\text{N}}{{\text{i}}^{2 + }}$

C.     Fe

D.     ${\text{C}}{{\text{u}}^{2 + }}$

B