Standard enthalpy of formation of CO2(g), H2O (l) and glucose (s) at 25°C are - 400 kJ/mol, -300 kJ/mol and -1300 kJ/mol respectively. The standard enthalpy of combustion of per gram of glucose at 25°C is :
(a) +2900 kJ
(b) -2900 kJ
(c) -16.11 kJ
(d) +16.11 kJ
