All of the Following Reactions Can Be Described as Displacement

Multiple Choice

All of the following reactions can be described as displacement reactions except

A) CuSO₄(aq) + Ni(s) → NiSO₄(aq) + Cu(s) .
B) 3CuCl₂(aq) + 2Al(s) → 3Cu(s) + 2AlCl₃(aq) .
C) Fe(s) + 2HCl(aq) → FeCl₂(g) + H₂(g) .
D) CH₄(g) + Br₂(g) → CH₃Br(g) + HBr(g) .
E) Mg(s) + Hg(NO₃) ₂(aq) → Mg(NO₃) ₂(aq) + Hg(l) .