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".

Q: [header] How to change a drill bit [title] Loosen the chuck. [step] The chuck is piece on the end of the drill that loosens and tightens to hold the bit. Grasp the chuck with one hand while you hold the handle of the drill with your other hand. <sep> (A) Loosen the chuck by sliding the drill bit along one side. If you have known it already, it will already be loose, but there is a screw on the end of the piece that holds the bit in place. (B) Use extra leverage as you slowly press down on the chuck to loosen it. [substeps] Keep your eye on the chuck while you are tightening it. (C) Twist the chuck counterclockwise to loosen it. Another option is to pull the trigger gently while holding the chuck. (D) Begin to tighten the chuck by turning it clockwise so that the chuck remains firmly in place. Use your wooden allen or long-handled allen key to turn the chuck clockwise until it is firmly within the drill's circle.

A: C
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Q: [header] How to make eyeliner wings even [title] Cut off two small pieces of tape. [step] You can use household scotch tape, or you can use surgical tape if your skin is a bit more sensitive. You will need one small piece for each eye. <sep> (A) You can always use 24 to 48 segments of duct tape if you want to make more liner. [substeps] Keep in mind that your wings might start to go out of style once the tape has dried. (B) [title] Use your tweezers to prick each eye in the " c " shape using the scratch tool. [step] Each eye needs to be in roughly the same shape, preferably with parts without movement. (C) [title] Make two smaller butterfly-shaped lines with the tape : [step] You can make a smaller butterfly-shaped wing by cutting it in half. Before you brush it over your face, wind it around your nostrils to make one side longer. (D) Fold one corner of the tape down, so that it creates a little flap that will make it easier to peel the tape off of your skin. [title] Place the tape on the corners of your eyes.

A: D
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Q: [header] How to root the nexus 7 [title] Back up all information on your nexus 7 tablet. [step] All personal data will be erased from your tablet during the rooting process. [substeps] Sync your personal information with google's servers, copy your data over to your computer, or download a third-party cloud storage service app from google play store. <sep> (A) [title] Navigate to the wugfresh website at http: // www.wugfresh.com/nrt /. [title] Select the option to download the nexus root toolkit. (B) Open a folder that houses your cellular data, save the data you want to share and tap backup to backup it to your computer. [title] Follow the on-screen instructions for rooting. (C) [title] Install os x 10.1 on your tablet. [step] After installation, simply tap the " windows " icon on the home screen. (D) If you have a gigabyte device, your tablet will search your phone's applications folder for a root disk that will be used for rooting. [title] Download the latest android root installer.

A:
A
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