Given the reaction:
N2(g) + 3 H2(g) <--> 2 NH3(g)
If the system is at equilibrium, what will happen is pressure is added?
Group of answer choices

A. Nothing. Pressure does not affect equilibrium position.

B. The reaction will shift to the right to produce more product.

C. All of the above

D. The reaction will shift to the left to produce more reactants