For the Reaction Given, Which Half Reaction Occurs at the Cathode

Multiple Choice

For the reaction given, which half reaction occurs at the cathode?
NiO₂ + Cd + H₂O $\rarr$ Cd(OH) ₂ + Ni(OH) ₂ + 2 OH^-

A) Cd $\rarr$ Cd(OH) ₂
B) NiO₂ $\rarr$ Ni(OH) ₂
C) Cd(OH) ₂ $\rarr$ Cd
D) H₂O $\rarr$ OH^-
E) There is no cathode as the cathodic reaction always occurs at the passive electrode.