A Blanket of Gaseous Nitrogen, N₂, Is Commonly Used to Store

A blanket of gaseous Nitrogen, N₂, is commonly used to store reactive substances that would otherwise oxidize in the presence of oxygen. However, nitrogen reacts with magnesium metal. Which equation shown below represents the chemical reaction that results when magnesium is allowed to react with nitrogen?

A) Mg (s) + N₂ (g) → MgN₂ (s)
B) 2 Mg (s) + N₂ (g) → 2 MgN (s)
C) 3 Mg (s) + N₂ (g) → Mg₃N₂ (s)
D) 4 Mg (s) + N₂ (g) → 2 Mg₂N (s)
E) 6 Mg (s) + N₂ (g) → 2 Mg₃N (s)