please give me apropriet answer
Clean them with a scouring pad and elbow grease afer letting them soak in warm water a while. You can prevent burning the cookie sheets by lining them with parchment paper(which you should be able to find in the baking section of your grocery store).
A is wood, paper B is liquid, grease C is electrical The larger the number, the larger a fire it can handle. The best all round extinguisher would be labelled ABC.
You should put them on a circuit that you would notice if it were to trip out. If they were on a circuit by them selves and tripped the breaker you may not notice it for sometime. The kitchen light circuit or a family room lighting circuit would be two I would suggest.or the bedroom as you suggest.
It means it can put out fires in flammable or combustible liquids.