Given the following reaction at equilibrium `N_(2)(g) + 3H_(2)(g)hArr2NH_(3)(g)`. Some inert gas at constant pressure is added to the system. Predict which of the following facts:
A. more `NH_(3)`is produced
B. Less `NH_(3) (g)` is produced
C. No affect on the equilibrium
D. `K_(p)` of the reaction is decreased