Which one is not called a anode reaction from the following

• A.        \[C{{l}^{-}}\,\to \,\frac{1}{2}C{{l}_{2}}+{{e}^{-}}\]   
• B.        \[Cu\,\to \,C{{u}^{++}}+2{{e}^{-}}\]
• C.        \[H{{g}^{+}}\,\to \,H{{g}^{++}}+{{e}^{-}}\] 
• D.        \[Z{{n}^{2+}}+2{{e}^{-}}\,\to \,Zn\]