Which row is the correct one?
- Aelements: graphite, iron; compounds: methane, water; mixtures: air, copper
- Belements: graphite, iron; compounds: sand, water; mixtures: air, brass
- Celements: iron, water; compounds: methane, graphite; mixtures: air, brass
- Delements: water, methane; compounds: air, graphite; mixtures: iron, brass