Calculate the Standard Reaction Enthalpy for the Following Reaction

Calculate the standard reaction enthalpy for the following reaction:

A) (-114.1 kJ.mol ^{- 1} )
B) (-246.9 kJ.mol ^{- 1} )
C) +114.1 kJ.mol ^{- 1}
D) (-294.6 kJ.mol ^{- 1} )
E) +246.9 kJ.mol ^{- 1}