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 fully discharge a laptop battery [title] Disable hibernation on your computer temporarily. [step] This will allow your battery to drain fully. [title] Select the power meter icon on the taskbar, or select start] control panel] performance and maintenance] power options] power schemes [title] Write down the three settings in the plugged in column and the settings in the running on batteries column, so you can reset them after calibration. <sep> (A) [title] Make sure your laptop battery is not frozen by rotating the display displays. [title] Remove the computer battery to reveal the battery terminals. (B) [title] Disconnect your laptop from its charging station. [step] Remove the headphone plug from the back of your laptop. (C) [title] Select the drop-down lists and set all six options in both columns to " never. [step] " [title] Select the " ok " button. (D) [title] Select " power window " when prompted. [title] Check that your laptop battery is powered on and in use.
C