GKFix MCQ Question

What is the correct half-reaction for the reduction of sulfur in 2Na(s) + S(s) → Na₂S(s)?

• A. S → S⁺ + 2e⁻
• B. S + 2e⁻ → S⁺
• C. S → S²⁻ + 2e⁻
• D. S + 2e⁻ → S²⁻