The Half-Reaction That Occurs at the Cathode During Electrolysis of Aqueous

The half-reaction that occurs at the cathode during electrolysis of aqueous sodium iodide solution is:

A) 2 H₂O(l) + 2 e^- $\rarr$ H₂(g) + 2 OH^-(aq)
B) I₂(aq) + 2 e^- $\rarr$ 2 I^-(aq)
C) 2 I^-(aq) $\rarr$ I₂(aq) + 2 e^-
D) Na⁺(aq) + e^- $\rarr$ Na(s)
E) Na(s) $\rarr$ Na⁺(aq) + e^-