The Heat of Formation of Fe₂O₃(s) Is -826 KJ/mol $\rightarrow$ 2Fe₂O₃(s) When a 18

The heat of formation of Fe₂O₃(s) is -826 kJ/mol. Calculate the heat of the reaction 4Fe(s) + 3O₂(g) $\rightarrow$ 2Fe₂O₃(s) when a 18.6 g sample of iron is reacted.

A) -551 kJ
B) -138 kJ
C) -96.3 kJ
D) -826 kJ
E) -275 kJ