GKFix MCQ Question

In the reaction Cr₂O₃(s) + 2Al(s) → Al₂O₃(s) + 2Cr(s), what is the role of aluminum?

• A. Aluminum acts as an oxidizing agent.
• B. Aluminum is neither oxidized nor reduced.
• C. Aluminum acts as a catalyst.
• D. Aluminum acts as a reducing agent.