In a single-displacement reaction where iron displaces copper from copper(II) sulfate, which is the net ionic equation?

• A. Fe(s) + Cu2+(aq) → Fe2+(aq) + Cu(s)
• B. Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)
• C. Cu2+(aq) + SO4^2−(aq) → Cu(s) + SO4^2−(aq)
• D. Fe2+(aq) + Cu2+(aq) → Fe3+(aq) + Cu(s)

Answer: (A)