From elementary molecular orbital theory we can deduce the electronic configuration of the singly positive nitrogen molecular ion `N_2^+` as
A. `sigma_(1s^2) sigma_(1s^2)^**sigma_(2s^2)^**sigma_(2s)^** 2pi_(2p^4)sigma_(2p^1)`
B. `sigma_(1s^2)sigma_(1s_2)^**, sigma_(2s^2)sigma_(2s^**)2sigma_(2p^1)pi_(2p^3)`
C. `sigma_(1s^2) sigma_(1s^2)^**, sigma_(2s^2) sigma_(2s^2)^**sigma_(2p^2)pi_(2p^4)`
D. `sigma_(1s^2) sigma_(1s^2)^**,sigma_(2s^2)sigma_(2s^2)^**sigma_(2p^2) pi_(2p^2)`
