The electronic configuration of two elements A and B are: A = `1s^(2) 2s^(2) 2p^(6) 3s^(1)` and B = `1s^(2) 2s^(2)2p^(5)` . The correct structural formula of the compound formed by them is.

Options

A. `A+ B-`
B. `A- B+`
C. `A - B`
D. `A^(2+) (B-)_(2)`