During sulfuric acid manufacture, the reaction $\text{2SO}_2(g) + \text{O}_2(g) \rightleftharpoons \text{2SO}_3(g)$ is usually carried out at $400\,^{\circ}\text{C}$ and $1\ \text{atm}$ pressure. At one industrial plant, the pressure is changed to $20\ \text{atm}$. What consequences will result from this change?
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only