Consider the Reaction N₂(g) + O₂(g) 2NO(g), for Which

Consider the reaction N₂(g) + O₂(g) 2NO(g) , for which K_c = 0.10 at 2000ºC. Starting with initial concentrations of 0.040 M for N₂ and 0.040 M for O₂ what is the equilibrium concentration of NO?

A) 0.0096 M
B) 0.011 M
C) 0.019 M
D) 0.080 M
E) 0.10 M