What do arsonist use to light the fire?

Matches, oil, petrol,cigarettes, rocks, litters, copper wire.Matches, oil, petrol,cigarettes, rocks, litters, copper wire.Matches, oil, petrol,cigarettes, rocks, litters, copper wire.Matches, oil, petrol,cigarettes, rocks, litters, copper wire.Matches, oil, petrol,cigarettes, rocks, litters, copper wire.Matches, oil, petrol,cigarettes, rocks, litters, copper wire.