Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean your ipad [title] Make sure your ipad is completely unplugged and press the " sleep " button on the top of your ipad or turn your ipad off completely. [step] Remove any additional external cords and/or electronics that may still be connected to the ipad. [title] If you have it, remove your ipad cleaning cloth from its case.

Ending1: [step] The cleaning cloth is the black microfiber cloth that came with the ipad packaging. Briskly shake the cloth in the air to remove any loose particles from the microfiber. Ending2: [step] You can purchase this device from a pharmacy. [title] Wipe any exposed glass around your ipad with the cloth. Ending3: [step] Use the rolling-out vacuum attachment to suck the dust or dirt out of the iphone and/or plug it into its charger. [substeps] You can also use compressed air to suck away dried lint or dirt from your ipad. Ending4: [step] You will now have a clean, unused ipad with decent, fresh batteries! [substeps] Dispose of the cloth in the trash. Never re-take it to a car or trash dump.

Answer format: ending1/ending2/ending3/ending4