Ammonia Gas Reacts with Molecular Oxygen to Produce Nitrogen Dioxide $\Delta$

Ammonia gas reacts with molecular oxygen to produce nitrogen dioxide gas and water vapor. Given the following standard enthalpies of formation, $\Delta$ H°_f:NH₃ (g) : -80.3 kJ mol^-1
NO₂ (g) : +33.2 kJ mol^-1
H₂O(g) : -241.8 kJ mol^-1
H₂O(l) : -285.8 kJ mol^-1 What is the standard enthalpy of reaction, in kJ for the reaction shown?Hint: Write the balanced reaction and be sure to pay attention to your coefficients when calculating the standard enthalpy of the overall reaction.

A) -172.3 kJ
B) -128.3 kJ
C) +157.5 kJ
D) -996.8 kJ
E) +1003.8 kJ