You will be given a definition of a task first, then some input of the task.
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". 

[header] How to take a screenshot on android [title] Find your android's power and volume down buttons. [step] This method works on most androids, but the key locations will vary. The power button is usually on the top or right edge of the screen. <sep> (A) [substeps] Tap the device and then tap the settings icon at the bottom right of the screen to open the settings menu. Tap " settings " from the menu, then scroll down and tap " phone settings. (B) The volume button will be near the top of the screen. [substeps] If your settings don't turn on, your device may have reset default settings. (C) Volume down is typically on the left or right edge. [substeps] If your android has a physical home button, your screenshot key combination could be the home + power buttons. (D) The volume down button to the left will turn green, and the volume down button to the right will turn off. An android with lower power and volume down settings will also be displayed instead.
Output:
C