$\text{SO}_3$ is produced from $\text{SO}_2$ and $\text{O}_2$ in the Contact process. This reaction is exothermic. Which row indicates the effect on the equilibrium yield in the Contact process of raising the temperature and of adding a vanadium(V) oxide catalyst?
- Aincreasing the temperature: equilibrium yield decreases; adding vanadium(V) oxide as catalyst: equilibrium yield increases
- Bincreasing the temperature: equilibrium yield decreases; adding vanadium(V) oxide as catalyst: equilibrium yield unchanged
- Cincreasing the temperature: equilibrium yield increases; adding vanadium(V) oxide as catalyst: equilibrium yield unchanged
- Dincreasing the temperature: equilibrium yield increases; adding vanadium(V) oxide as catalyst: equilibrium yield increases