use the data shown
CH4(g) + 2F2(g) → CF4(g) + 2H2(g) ∆H°= -858kJ/mol

C(s) + 2F2(g) → CF4(g) ∆H°= -933kJ/mol
what is the standard enthalpy of formation of Methane (CH4) in kJ/mol
A. -1791
B. +75
C. -75
D. +1791​