GKFix MCQ Question

What is the enthalpy change for the reaction: C₆H₆(l) → 6C(graphite) + 3H₂(g)?

• A. +49.0 kJ mol⁻¹
• B. –49.0 kJ mol⁻¹
• C. +393.5 kJ mol⁻¹
• D. –393.5 kJ mol⁻¹