The Standard Enthalpy of Formation of Ammonia Gas Is -46 $\degree$

The standard enthalpy of formation of ammonia gas is -46.11 kJ.mol ^{- 1} at 298 K.What is the standard reaction enthalpy for the Haber process at 500 $\degree$ C? The molar heat capacities of nitrogen,hydrogen,and ammonia are 29.12,28.82,and 35.06 J.K ^-1.mol^-1 respectively.

A) (-97.65 kJ.mol ^{- 1} )
B) (-113.81 kJ.mol ^{- 1} )
C) (-56.91 kJ.mol ^{- 1} )
D) (-92.22 kJ.mol ^{- 1} )
E) (-103.09 kJ.mol ^{- 1} )