instruction:
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". 
question:
[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.
answer:
C


question:
[header] How to stop picking your scabs [title] Disinfect the wound. [step] Open wounds and sores can develop infections. Always wash a new wound thoroughly with soap and water as soon as you obtain it. <sep> (A) Do not use hydrogen peroxide, petroleum or other deodorizers. Do not use antibacterial or antiseptic cleaners, as these may irritate the wound. (B) Then clean it up with an antiseptic wipe or a bit of neosporin and apply a bandage to protect it while it heals. You can also try using betadine or peroxide on the wound to clean and remove unwanted bacteria. (C) [substeps] Spread antibiotic ointment onto the wound, cover the wound with a sterile dressing that may be applied to the wound if it requires it. If you get a scab, wait 15 minutes to let the ointment finish fully absorbing in to the wound. (D) At least once every two weeks, take a shower or bath for seven to 10 days and splash your wound with warm water before applying bandages. Use soap with antibacterial properties and do not share it with others.
answer:
B


question:
[header] How to sprout grains [title] Measure out a quantity of grain equal to about half the amount you would normally cook for yourself or your family. [step] Keep in mind that the grain will nearly double in bulk after soaking and sprouting, so don't prepare more than you can consume or store. [title] Rinse the grain thoroughly, being sure to remove any rotten grains, stones, or other debris. <sep> (A) [step] Mash the grain using a fork or potato masher till it becomes smooth. [title] Divide the grain into compartments, one at a time. (B) [title] Place the clean grain in a pot. [step] Cover the grain completely with water, adding another 3/4 inch (2 cm) above the grain. (C) [title] Soak the grain for 3-4 days, or until it's deep and slimy. [step] The longer this takes, the firmer your grains will be. (D) [step] You could also toss any unwashed grains or bowls in the dishwasher, as well. [title] Boil the grains according to their firmness and freshness.
answer:

B