Given the following reaction at equilibium.
`N_2(g) +3H_2(g)hArr 2NH_3(g)`
Some inert gas at constant pressure is added to the system.Predict which of the following facts will be correct ?
A. More `NH_3(g)` is produced
B. Less `NH_3(g)` is produced
C. No effect on the equilibrium
D. `K_p` of the reaction is decreased