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 enthelpy of sublimation of carbon.
B. latent heat of vaporisation of methane.
C. the first four ionization energies of carbon and electron gain enthlpy of hydrogen.
D. the dissociation energy of hydrogen molecule, `H_(2)`
