For the Galvanic Cell Reaction,expressed Below Using Shorthand Notation,what Half-Reaction

question 16

Multiple Choice

For the galvanic cell reaction,expressed below using shorthand notation,what half-reaction occurs at the anode?
Mg(s) ∣ Mg²⁺(aq) ∣∣ Cd²⁺(aq) ∣Cd(s)

• A)Mg(s)→ Mg²⁺(aq)+ 2 e^-
• B)Mg²⁺(aq)+ 2 e^- → Mg(s)
• C)Cd(s)→ Cd²⁺(aq)+ 2 e^-
• D)Cd²⁺(aq)+ 2 e^- → Cd(s)