Which one of the following chemical reactions is NOT feasible?

• A. \(Fe + CuSO_4 \rightarrow FeSO_4 + Cu\)
• B. \(Zn + CuSO_4 \rightarrow ZnSO_4 + Cu\)
• C. \(Cu + PbCl_2 \rightarrow CuCl_2 + Pb\)
• D. \(Mg + CuSO_4 \rightarrow MgSO_4 + Cu\)