The standard enthalpy of formation `(Delta_(f)H^(@))` at `298K ` for methane `(CH_(4(g)))` is `-74.8kJ mol^(-1)`. The additional information required to determine the average energy for `C-H` bond formation would be `:`
A. The dissociation energy of `H_(2)` and enthalpy of sublimation of carbon
B. The letent heat of vaporisation of methane
C. The first four ionisation energies of carbon and electron gain enthalpy of hydrogen
D. The dissociation energy of hydrogen molecule
