Which Choice BEST Represents a Balanced Equation for the Reaction $\rightarrow$

Which choice BEST represents a balanced equation for the reaction of nitrogen gas and oxygen gas to form nitrogen monoxide?

A) N₂ + O₂ $\rightarrow$ 2 NO
B) N + O $\rightarrow$ NO
C) N₂ + 2 O $\rightarrow$ 2 NO
D) 2 N + O₂ $\rightarrow$ 2 NO