已知：C(s)+O₂(g)====CO₂(g) ΔH="-393.5" kJ·mol^-1；CO(g)+1/2O₂(g) ====CO₂(g)
ΔH="-283" kJ·mol^-1；则C(s)与O₂(g)反应生成1 mol CO(g)的反应热为（  ）

A：ΔH='-676.5' kJ·mol^-1

B：ΔH='+676.5' kJ·mol^-1

C：ΔH='-110.5' kJ·mol^-1

D：ΔH='+110.5' kJ·mol^-1