Write a Balanced Half-Reaction for the Reduction of Permanganate Ion,MnO₇−,to

Write a balanced half-reaction for the reduction of permanganate ion,MnO₇−,to Mn²⁺ in an acidic solution.

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