Which of the Following Ions Have the Same Ground State

Which of the following ions have the same ground state electron configuration: S^2-,N^3-,Mg²⁺,and Br^-?

A) N^3- and Mg²⁺
B) S^2-,N^3-,and Br^-
C) S^2- and Br^-
D) Mg²⁺ and Br^-
E) S^2-,N^3-,Mg²⁺,and Br^-