When Solid Ammonium Carbonate Is Heated, It Decomposes to Form

When solid ammonium carbonate is heated, it decomposes to form ammonia gas, carbon dioxide gas, and water vapor, so that the solid completely disappears. Which of the following is the complete, balanced equation for this reaction?

A) (NH₄) ₂CO₃(s) → 2NH₃(g) + CO₂(g) + H₂O(g)
B) (NH₄) ₂CO₃(s) → NH₃(g) + CO₂(g) + 3H₂O(g)
C) NH₄CO₃(s) → NH₂(g) + CO₂(g) + H₂O(g)
D) NH₄CO₃(s) → NH₃(g) + CO₂(g) + H₂O(g)
E) (NH₄) ₂CO₃(s) → NH₃(g) + CO₂(g) + H₂O(g)