Which row identifies the catalyst used in the Haber process and the origins of the raw materials?
- Acatalyst: iron; source of hydrogen: electrolysis; source of nitrogen: fertiliser
- Bcatalyst: iron; source of hydrogen: methane; source of nitrogen: air
- Ccatalyst: vanadium pentoxide; source of hydrogen: methane; source of nitrogen: air
- Dcatalyst: vanadium pentoxide; source of hydrogen: methane; source of nitrogen: fertiliser