Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to turn on an ipod touch [title] Ensure that the ipod touch is charged. [step] If the battery has run out, the ipod touch will not turn on. Plug the ipod touch into a power outlet and let it charge for an hour before trying to turn it on again.

Ending1: [substeps] If it fails to charge before this point, a power-off is advisable. [title] Firmly and quietly turn the ipod touch on. Ending2: [title] Remove the ipod touch from the bag. [step] The plastic piece that holds it in place may break if you repeatedly touch the item with your bare fingers. Ending3: [title] Press and hold the power and home buttons. [step] Hold both buttons for about ten seconds. Ending4: [substeps] A new battery, such as a usb battery, will have a light display on it so you can see if it's charging. [title] Press the battery to see if it is charged.

Answer format: ending1/ending2/ending3/ending4