Which of the following is denuding reaction?

• A. NaCl+H2O →\(NaOH+\frac{1}{2} H_2+\frac{1}{2} Cl_2 \)
• B. Cl– →\(\frac{1}{2}\) Cl2 + e–
• C. Na + Hg →NaHg
• D. NaHg+H2O →NaOH+\(\frac{1}{2}\) H2 + Hg