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]: [header] How to dry your hair [title] Pat your hair dry with a towel. [step] If you can, try to use a microfiber towel. Microfiber towels are soft and gentle on all hair types. <sep> (A) Avoid using dull towels, since they make hair really dry quickly. [substeps] If you're in a hurry, dampen a microfiber towel with some water and wring it out. (B) You don't need to rub the towel over your hair, just pat it dry. [title] Choose a hair shade that reflects well. (C) They are less likely to snag, rip, or tear your hair than regular towels. Microfiber towels can also help reduce frizz. (D) Make sure to pat the towel dry gently and without abrading your hair. After drying, use the apple cider vinegar spray to gently splash your hair with cool water.
[A]: C


[Q]: An athlete practices tossing a javelin in a track a field course. The athlete starts with two or three side steps and then proceeds to toss the javelin. the athlete <sep> (A) then increases his speed and steps. (B) runs parallel to the chalk and throws four instructions that lead into a discus throw, where he throws the javelin as far as he can into the distance. (C) then does a backswing outside of the track. (D) throws the javelin to the other side and then back to the field.
[A]:
A