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)+ O2(g)＝CO(g)；△H＝－393.5 kJ/mol

B．2H2(g)+O2(g)＝2H2O(g)；△H＝＋571.6 kJ/mol

C．CH4(g)+2O2(g)＝CO2(g)+2H2O(g)；△H＝－890.3 kJ/mol

D．1/2C6H12O6（s）+3O2(g)＝3CO2(g)+3H2O(l)；△H＝－1400 kJ/mol