In the Electrochemical Cell Using the Redox Reaction Below,the Cathode

In the electrochemical cell using the redox reaction below,the cathode half-reaction is ________. 2 (s) + Sn (s) → (aq) + H₂ (g)

A) 2H⁺ + 2e^- → H₂
B) Sn → Sn²⁺ + 2e^-
C) 2H⁺ → H₂ + 2e^-
D) Sn + 2e^- → Sn²⁺
E) Sn + → H₂