Write the balanced half-reaction equation for when ( H₂O₂ ) acts as an oxidizing agent.

a) ( H₂O₂ → O₂ + 2H⁺ + 2e⁻ )
b) ( H₂O₂ + 2e⁻ → O₂ + 2H⁺ )
c) ( H₂O₂ → 2H⁺ + 2e⁻ + O₂ )
d) ( O₂ + 2H⁺ + 2e⁻ → H₂O₂ )