All of the Following Reactions Are Described as Decomposition Reactions

Multiple Choice

All of the following reactions are described as decomposition reactions except

A) PCl₅(l) → PCl₃(g) + Cl₂(g) .
B) 2CH₃OH(l) + 3O₂(g) → 2CO₂(g) + 4H₂O(g) .
C) NH₄HS(s) → NH₃(g) + H₂S(g) .
D) (NH₄) ₂Cr₂O₇(s) → N₂(g) + 4H₂O(g) + Cr₂O₃(s) .
E) 2CO₂(g) → 2CO(g) + O₂(g) .