I'm confused how -144 kJ is incorrect, please help and explain!

Calculate the enthalpy of the reaction 2NO(g)+O2(g)2NO2(g) Hess's law states that "the heat released or absorbed in a chemical process is the same whether the given the following reactions and enthalpies of formation: process takes place in one or in several steps." It is A. 21N2(g)+O2(g)NO2(g),HA=33.2kJ important to recall the following rules: B. 21N2(g)+21O2(g)NO(g),HB=90.2kJ 1. When two reactions are added, their enthalpy values are added. 2. When a reaction is reversed, the sign of Express your answer with the appropriate units. its enthalpy value changes. 3. When the coefficients of a reaction are multiplied by a factor, the enthalpy value is multiplied by that same factor. X Incorrect; Try Again; 5 attempts remaining