According to is M.O. theory, which is the correct increasing sequence of B.O. in `N_(2),N_(2)^(-)and N_(2)^(2-)` ?
A. `N_(2)^(2-) lt N_(2)^(-) lt N_(2)`
B. `N_(2) lt N_(2)^(2-) lt N_(2)^(-)`
C. `N_(2)^(-) lt N_(2)^(2-) lt N_(2)`
D. `N_(2)^(-) lt N_(2) lt N_(2)^(2-)`
