A,B and C are readily available to the general consumer. So that's the one I got.
What I really want is a CO2 extingisher. B and C rated, a lot less cleanup after the fire.
I learned from a school, I friend lost his car to a fire. He was troubleshooting fuel odors, with no extinguisher near by. By the time he got his extinguisher, fire got too big for the extinguisher capacity.
Class A – Ordinary Combustibles ex: wood, paper, or cloths
Class B – Liquids/Gases ex: gasoline
Class C – Electrical fires
Class D – Flammable Metals ex: lithium, titanium and magnesium
Class K – Kitchen fires ex: cooking oil/fats