The decomposition of dinitrogen tetraoxide into nitrogen gas and oxygen gas is shown by which balanced chemical equation?

A) N2(g) + 2O2(g) → N2O4(g)
B) N2O4(g) → N2(g) + O2(g)
C) N2O4(g) → N2(g) + 2O2(g)
D) N2O4(g) + 2O2(g) → N2(g)