GKFix MCQ Question

What is the enthalpy change for the reaction Fe(s) + ³⁄₂H2O(l) → ½Fe2O3(s) + ³⁄₂H2(g)?

• A. –16.6 kJ mol⁻¹
• B. +16.6 kJ mol⁻¹
• C. +33.3 kJ mol⁻¹
• D. –33.3 kJ mol⁻¹