GKFix MCQ Question

What is the standard reaction enthalpy for C(graphite,s) + O₂(g) → CO₂(g)?

• A. –283.0 kJ mol⁻¹
• B. –285.83 kJ mol⁻¹
• C. +393.5 kJ mol⁻¹
• D. –393.5 kJ mol⁻¹