下列热化学方程式中，△H能正确表示物质的燃烧热的是

A．2CO(g) +O2(g) =2CO2(g) △H="-566.0" kJ/mol

B．C(s) +1/2O2(g) =CO(g) △H="-110.5" kJ/mol

C．CH4(g) +2O2(g)=CO2(g)+2H2O(l) △H="-890.31" kJ/mol

D．2C8H18(l) +25O2(g)=16CO2(g)+18H2O(l) △H="-11036" kJ/mol