Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean a dyson filter [title] Locate your vacuum's serial number. [step] Look for a sticker on your machine. Write down the first three digits of the serial number shown on the sticker.

Ending1: This will help you decide whether your device is a factory model or not. [substeps] Factory models come in three sizes : 2 " , 6 ", and 7 ". Ending2: The sticker may be in one of the following places: on the back behind the hose; at the base between the wheels; behind the bin. [substeps] If you're having trouble finding the sticker, navigate to http: // www.dyson.com/support/findserialnumber. Ending3: If you don't see the sticker or serial number, if your manual doesn't have this information, it probably means your plug plug cannot be set. [title] Perform an old-fashioned cleaning of your dyson chain. Ending4: You can use this as a road map or as a very brief reminder to find your vacuum's serial number. [title] Fill the inner reservoir with hot water.

Answer format: ending1/ending2/ending3/ending4