The resonating structures of cyanate ion are `O=C=overset(1-)(N)harroverset(1-)(O)-C-=Nharroverset(1+)-=C-overset(2-)(N)` . The correct set of oxidation states of O, C and N respectively with the most stable structure out of the above is :
A. `-2,+4,3`
B. `-2,+4,-3`
C. `2,+4,-3`
D. `0,+4,-5`