JEE Main 2018 Chemistry question

Given (i) 2FeO(s) → 4Fe(s) + 3O(g); = + 1487.0 kJ mol (ii) 2CO(g) + O(g) → 2CO(g); = –514.4 kJ mol Free energy change, for the reaction 2FeO(s) + 6CO(g) → 4Fe(s) + 6CO(g) will be -

• (A)–112.4 kJ mol
• (B)–56.2 kJ molCorrect
• (C)–208.0 kJ mol
• (D)–168.2 kJ mol