Write the Balanced Half-Reaction for the Reduction of Permanganate Ion

Write the balanced half-reaction for the reduction of permanganate ion to Mn²⁺ in an acidic solution.

A) MnO₄−(aq) + 8H⁺(aq) → Mn²⁺(aq) + 4H₂O(l)
B) MnO₄−(aq) + 5e− → Mn²⁺(aq) + 2O₂(g)
C) MnO₄−(aq) + 4H⁺(aq) + 3e− → Mn²⁺(aq) + 4OH−(aq)
D) MnO₄−(aq) + 4H⁺(aq) + 5e− → Mn²⁺(aq) + 4OH−(aq)
E) MnO₄−(aq) + 8H⁺(aq) + 5e− → Mn²⁺(aq) + 4H₂O(l)