Which One of the Following Reactions Must Be Carried Out $\rarr$

Which one of the following reactions must be carried out in an electrolytic cell rather than in a galvanic cell

A) Zn²⁺(aq) + Ca(s) $\rarr$ Zn(s) + Ca²⁺(aq)
B) Al³⁺(aq) + 3Br^-(aq) $\rarr$ Al(s) + (3/2) Br₂(l)
C) 2Al(s) + 3Fe²⁺(aq) $\rarr$ 2Al³⁺(aq) + 3Fe(s)
D) H₂(g) + I₂(s) $\rarr$ 2H⁺(aq) + 2I^-(aq)
E) Fe²⁺(aq) + Mg(s) $\rarr$ Fe(s) + Mg²⁺(aq)