Fire extinguishers come in several versions, each designed for different types of fires:
Water extinguishers for Class A fires involving solids.
Foam extinguishers for Class A and B fires involving flammable liquids.
Dry Powder extinguishers for Class A, B, and C fires involving gases.
CO2 extinguishers for Class B and electrical fires.
Wet Chemical extinguishers for Class K fires involving cooking oils and fats.