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


[Q]: A woman is sitting down at a table talking. she <sep> (A) lifts up a box and sets it on the table. (B) puts ice in an ice bucket. (C) picks up a bottle in her lap. (D) is sitting while a child pushes a ball out into the street.
[A]: A


[Q]: First the man removes the baseboard, then he gets a drill and puts screws in the floor. Then he draws lines to put tiles on the floor. i <sep> (A) watch him as he is working on the baseboard, then all the tiles are removed from the baseboard. (B) put tiles of tile on the floor, then keep the lines overlaid on the tiles to finish. (C) then see him with a machine that cuts tiles in half and he puts half of a tile on the floor. (D) finish the roof as the man puts his tools to the top of the roof.
[A]:
C