Which of the following is not a permissible resonating form?
A. `H_(2)overset(o+)C-underset(CH_(3))underset(||)overset(* *)N-overset(Ɵ)O`
B. `CH_(2)=underset(CH_(3))underset(|)overset(o+)N-overset(Ɵ)O`
C. `CH_(2)=underset(CH_(3))underset(|)overset(o+)N=O`
D. `overset(Ɵ)CH_(2)-underset(CH_(3))underset(|)overset(o+)N=O`