GKFix MCQ Question

What is the enthalpy change for the reaction: C(graphite) + O₂(g) → CO₂(g)?

• A. +393.5 kJ mol⁻¹
• B. –393.5 kJ mol⁻¹
• C. +285.83 kJ mol⁻¹
• D. –285.83 kJ mol⁻¹