.....ps never try to put out a paraffin fire with water. i grew up being taught this in a time when people still used heaters, but fear it's falling out of common knowledge, even my insurance company insists that i carry a water fire extinguisher. i can assure you that paraffin does float on water and will spread as far the edge of said water with incredible ease, just as your grandad warned you.....
Yep. You should use either a Class B extinguisher or a multi class one. There is a safe way to extinguish flammable liquids with water (at least on small fires) but it takes specialized training. Albeit said training isn't really difficult.