During the electrolysis of molten sodium chloride,the electrode reactions are:

• A
  Anode: $Na^{+} + e^{-} \rightarrow Na_{(s)}$,Cathode: $Cl^{-} \rightarrow 1/2 Cl_2 + e^{-}$
• B
  Anode: $Na_{(s)} \rightarrow Na^{+} + e^{-}$,Cathode: $1/2 Cl_2 + e^{-} \rightarrow Cl^{-}$
• C
  Anode: $Cl^{-} \rightarrow 1/2 Cl_2 + e^{-}$,Cathode: $Na^{+} + e^{-} \rightarrow Na_{(s)}$
• D
  Anode: $1/2 Cl_2 + e^{-} \rightarrow Cl^{-}$,Cathode: $Na_{(s)} \rightarrow Na^{+} + e^{-}$