Le Châtelier's principle: pressure and moles of gas

For N₂(g) + 3H₂(g) ⇌ 2NH₃(g), compressing the container to increase pressure shifts the equilibrium:

1. AToward N₂ and H₂✕
2. BNeither way, since pressure does not affect equilibrium✕
3. CNeither way, because K increases instead✕
4. DToward NH₃, the side with fewer moles of gas✕