For the reaction, 2SO2(g) + O2(g) ⇌ 2SO3(g) ∆H˚ < 0 Which change(s) will increase the fraction of SO — Equilibrium Chemistry Question

For the reaction,
2SO₂(g) + O₂(g) ⇌ 2SO₃(g) ∆H˚ < 0
Which change(s) will increase the fraction of SO₃(g) in the equilibrium mixture?
1. Increasing the pressure
2. Increasing the temperature
3. Adding a catalyst