GKFix MCQ Question

Which of the following reactions has ∆rH⁰ equal to ∆fH⁰ of CO₂(g)?

• A. CO + ½O₂ → CO₂
• B. C + CO₂ → 2CO
• C. C(graphite,s) + O₂(g) → CO₂(g)
• D. 2CO → 2C + O₂