The Haber process is used to make ammonia. State the conditions used in the Haber process.
- A$450^\circ\text{C}$, $200$ atmospheres, iron
- B$450^\circ\text{C}$, $5$ atmospheres, vanadium(V) oxide
- C$200^\circ\text{C}$, $450$ atmospheres, iron
- D$200^\circ\text{C}$, $5$ atmospheres, vanadium(V) oxide