Standar enthalpy of formation of three combustible isomers compound A,B,C are -20Kcal/mol ,30kcal /mol and 40kcal /mol respectively then what will be order of their enthalpy of combustion ?
A. `DeltaH_(c)^(@)[A]ltDeltaH_(c)^(@)[B]lt DeltaH_(c)^(@)[C]`
B. `DeltaH_(c)^(@)[B]gtDeltaH_(c)^(@)[A]gt DeltaH_(c)^(@)[C]`
C. `DeltaH_(c)^(@)[A]gtDeltaH_(c)^(@)[B]gt DeltaH_(c)^(@)[C]`
D. `DeltaH_(c)^(@)[C]gtDeltaH_(c)^(@)[A]gt DeltaH_(c)^(@)[B]`