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 cope with a staff shortage [title] Cut back on inventory. [step] You may already have a balanced budget. However, try reducing your spending even more. <sep> (A) The extra cuts in expenditures may save you a nice sum of money. After all, spending less is a safer bet than taking chances on turning a record profit. (B) When learning an employee's finances, that in turn hurt your own. Many importantly, you should try to avoid starting cravings for food whenever possible. (C) This can minimize how much inventory you collect, especially in smaller-scale places. [substeps] For example, cut out three or four salons and one of them produces less inventory than the other three or three. (D) If you tend to splurge on supplies and only go for limited items, investing substantially on supplies and spending more on inventory can cause you to feel into debt or mess up your budget. This can cause you to spend your savings on high-value products.
[A]: A


[Q]: [header] How to get an automatic and correct flash sight picture and an automatic and correct sight picture with p&s [title] Learn to aim. [step] Aiming involves sight alignment and sight placement. [title] Learn what sight alignment is. <sep> (A) [step] Sight alignment is the placement of crosshair lines on the ground. This enables sighting to identify sights for target conditions or to guide crosshairs over distance. (B) [step] This is similar to the physical method, but your shooting sight will have the graphics shown on the display of the screen, such as balance, dotted light, a branch at the prime. This has many uses for one rifle, such as allowing you to be no more than 7 feet (2 meters) off the ground, well-controlled, target. (C) [title] Learn the control positions that occur in a snappose click and hold steady target hold. [title] Learn which mode to use with a picture splitter. (D) [step] Sight alignment is the centering of the front blade in the rear sight notch, and the raising or lowering the top of the front sight so it is level with the top of the rear sight. [title] Sight placement is the positioning of the weapon's sights in relation to the target.
[A]:
D