You'll need an ABC extinguisher to be safe. They can handle any type of fire. However, an extinguisher won't do you any good and could make things worse by spreading the fuel (in the case of a liquid fuel anyway) if you don't use it correctly. You want to aim at the base of the fire in a sweeping motion. Aim too high and you won't put it out. In the case of a fire fed by liquid fuel you can spread the fire by aiming too low and spreading the fuel. Finally, empty the extinguisher when you use it. No need to take a chance on the fire starting up again when you could have fully extinguished by using the entire cannister to begin with. You'll need to throw it away or recharge it once you've used it; so, there's nothing gained by not emptying it.
