25 ℃、101 kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ·mol^-1、285.8 kJ·mol^-1、890.3 kJ·mol^-1、2 800 kJ·mol^-1，则下列热化学方程式正确的是 （   ）

A．C(s)+O2(g)====CO(g);ΔH="-393.5" kJ·mol^-1

B．2H2(g)+O2(g)====2H2O(g);ΔH="+571.6" kJ·mol^-1

C．CH4(g)+2O2(g)====CO2(g)+2H2O(g);ΔH="-890.3" kJ·mol^-1

D．C6H12O6(s)+3O2(g)====3CO2(g)+3H2O(l);ΔH="-1" 400 kJ·mol^-1