GKFix MCQ Question

What is the enthalpy change for the reaction: C(graphite, s) + 2H₂(g) → CH₄(g)?

• A. +74.81 kJ mol⁻¹
• B. –74.81 kJ mol⁻¹
• C. +37.40 kJ mol⁻¹
• D. –37.40 kJ mol⁻¹