The Heat of Formation of Fe₂O₃(s) Is -826 KJ/mol

The heat of formation of Fe₂O₃(s) is -826 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 3O₂(g) → 2Fe₂O₃(s) when a 15.2 g sample of iron is reacted.

A) -450 kJ
B) -113 kJ
C) -78.7 kJ
D) - 826 kJ
E) -225 kJ