The Contact process, the Haber process and the hydrogenation of fats each use a catalyst. Which row shows whether the catalyst used in each process is an element or a compound?
- AContact: compound; Haber: compound; hydrogenation: compound
- BContact: compound; Haber: element; hydrogenation: element
- CContact: element; Haber: element; hydrogenation: compound
- DContact: element; Haber: element; hydrogenation: element