Which row gives the conditions used in the manufacture of sulfuric acid in the Contact process?
- Apressure $250\,\text{atm}$; temperature $200\,^{\circ}\text{C}$; catalyst vanadium(V) oxide
- Bpressure $2\,\text{atm}$; temperature $450\,^{\circ}\text{C}$; catalyst vanadium(V) oxide
- Cpressure $250\,\text{atm}$; temperature $200\,^{\circ}\text{C}$; catalyst iron
- Dpressure $2\,\text{atm}$; temperature $450\,^{\circ}\text{C}$; catalyst iron