What is the overall chemical reaction when copper (II) sulfate reacts with magnesium metal?
A. CuSO₄ (aq) + Mg (s) → MgSO₄ (aq) + Cu (s)
B. MgSO₄ (aq) + Cu (s) → CuSO₄ (aq) + Mg (s)
C. Mg (s) + CuSO₄ (aq) → Cu (s) + MgSO₄ (aq)
D. Cu (s) + MgSO₄ (aq) → Mg (s) + CuSO₄ (aq)