During the treatment of cyanide-containing wastewater, cyanate ions, \(\text{OCN}^{-}\), can form. A student considers the three resonance contributors shown below. Each contributor uses 16 valence electrons and gives every atom an octet.

Contributor	Bonding pattern	Number of lone pairs on \(\text{O}\), \(\text{C}\), and \(\text{N}\), respectively
I	\(\text{O}-\text{C}\equiv\text{N}\)	3, 0, 1
II	\(\text{O}=\text{C}=\text{N}\)	2, 0, 2
III	\(\text{O}\equiv\text{C}-\text{N}\)	1, 0, 3

Which choice correctly identifies the contributor that makes the greatest contribution to the resonance hybrid and provides the best justification?