What Is the Reduction Half Reaction for the Following Chemical

Multiple Choice

What is the reduction half reaction for the following chemical reaction in a basic solution?
Mn²⁺(aq) + 2 ClO₃^-(aq) + OH^-(aq) → MnO₂(s) + 2 ClO₂(aq) + H₂O(l)

A) Mn²⁺(aq) + 4 OH^-(aq) → MnO₂(s) + 2 H₂O(l) + 2e^-
B) Mn²⁺(aq) + 2 H₂O(l) → MnO₂(s) + 4 H⁺(aq) + 2e^-
C) ClO₃^-(aq) + H₂O(l) + e^- → ClO₂(aq) + 2 OH^-(aq)
D) ClO₃^-(aq) + 2 H⁺(aq) + e^- → ClO₂(aq) + H₂O(l)