Use the Standard Reaction Enthalpies Given Below to Determine $D _ { \mathrm { r } }$

Use the standard reaction enthalpies given below to determine $D _ { \mathrm { r } }$ H° for the following reaction: 2NO(g) + O₂(g) ? 2NO₂(g) _DrH°= ?
Given:
N₂(g) + O₂(g) ? 2NO(g) _DrH°= +183 kJ
1/2 N₂(g) + O₂(g) ? NO₂(g) _DrH°= +33 kJ

A) -150.kJ mol^-1
B) -117 kJ mol^-1
C) -333 kJ mol^-1
D) +115 kJ mol^-1
E) +238 kJ mol^-1