For the galvanic cell reaction,expressed below using shorthand notation,what half-reaction occurs at the anode? Fe(s) ∣ Fe2+(aq) ∣∣ Cd2+(aq) ∣Cd(s)
A) Fe(s) → Fe2+(aq) + 2 e-
B) Fe2+(aq) + 2 e- → Fe(s)
C) Cd(s) → Cd2+(aq) + 2 e-
D) Cd2+(aq) + 2 e- → Cd(s)
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