Electronic configuration of four elements A, B, C and D are given below:
(A) \( 1s^2 2s^2 2p^3 \) → N
(B) \( 1s^2 2s^2 2p^4 \) → O
(C) \( 1s^2 2s^2 2p^5 \) → F
(D) \( 1s^2 2s^2 2p^2 \) → C
Which of the following is the correct order of increasing electronegativity (Pauling's scale)?