25℃、101 kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol，则下列热化学方程式正确的是
A、C(s)+1/2O2(g)＝CO(g) △H =-393.5 kJ/mol
B、2H2(g)+O2(g)＝2H2O(l) △H = +571.6 kJ/mol
C、CH4(g)+2O2(g)＝CO2(g)+2H2O(g) △H = -890.3 kJ/mol
D、C6H12O6(s) +6O2(g)＝6CO2(g)+6H2O(l) △H =-2800 kJ/mol
