Which of the following represents the correct Lewis structure for the cyanate ion $(OCN^-)$?
- A$[\ddot{O}=C=\ddot{N}:]^{-}$
- B$[C\equiv C:]^{2-}$
- C$[\ddot{Cl}-\ddot{O}:]^{-}$
- D$:\ddot{N}\equiv\ddot{O}:$
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