Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: [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. <sep> (A) [substeps] If it fails to charge before this point, a power-off is advisable. [title] Firmly and quietly turn the ipod touch on. (B) [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. (C) [title] Press and hold the power and home buttons. [step] Hold both buttons for about ten seconds. (D) [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.
Output:
C