已知：Fe₂O₃(s)＋C(s)===CO₂(g)＋2Fe(s)　ΔH＝+234.14 kJ·mol^－1

C(s)＋O₂(g)===CO₂(g)　          ΔH＝－393.5 kJ·mol^－1

则2Fe(s)＋O₂(g)===Fe₂O₃(s)的ΔH是

A．－824.39 kJ·mol^－1

B．+ 627.6 kJ·mol^－1

C．－744.7 kJ·mol^－1

D．－169.4 kJ·mol^－1