Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to clean a macbook or macbook pro computer [title] Purchase cleaning products. [step] Cleaning a computer that is still running could compromise any open documents or programs. Be sure that the computer is not in sleep mode, but completely powered down.

Ending1: [title] Clean macbooks that are not keeping information in a high-speed printer nearby. [step] This could mean the computer has shut down more than one time. Ending2: Be sure that any unused buttons and hardware are out of harms reach. The best way to clean a macbook pro is to have your printer cartridges printed for you to print off, fully charged. Ending3: If the computer needs to be used for another day or a week, it will need to be repaired. [substeps] If you are having trouble finding cleaning products on the internet, and the computer is still powered down in sleep mode, call your local of computer repair services. Ending4: [substeps] If you have a removable battery, remove it. Make sure you detach the power adapter, too.

Answer format: ending1/ending2/ending3/ending4