From the following data at `25^(@)C`
`{:("Reaction ",Delta_(r) H^(@) kJ//mol),((1)/(2)H_(2)(g) + (1)/(2)O_(2)(g) rarr OH (g),42),(H_(2)(g) + (1)/(2)O_(2)(g) rarr H_(2)O_(g),-242),(H_(2)(g) rarr 2H(g),436),(O_(2)(g) rarr 2O(g),495):}`
Which of the following statement(s) is/are correct:
Statement (a): `Delta_(r)H^(@)` for the reaction `H_(2)O(g) rarr 2H(g) + O(g)`
Statement (b): `Delta_(r)H^(@)` for the reaction `OH(g) rarr H(g) + O(g)` is
Statement (c) : Enthalpy of formation of H(g) is `-218` kJ/mol
Statement (d): Enthalpy of formation of OH(g) is 42 kJ/mol

Options

A. Statement c
B. Statement a,b,d
C. Statement b,c
D. statement a,d