user: 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". 
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Question: [header] How to clean a cast iron stove [title] Place an old newspaper on the ground in front of the stove. [step] Do this as a protective measure before you begin scooping ashes out of the stove, as they are liable to drop onto the ground. A newspaper will make cleanup much easier. <sep> (A) [substeps] You might even want to splash some cold water over the newspaper, so the water completely freezes around the newspaper. A drop of lemon juice can also help. (B) [title] Pour about a tablespoon of salt into the newspaper you have saved. [step] Add lemon juice and shake off the salt. (C) [title] Use the newspaper to wipe and scrape any soot out of the cast iron burner. [step] Do this several times until any soot is gone. (D) As you're spreading the newspaper, open the air dampener so that any ash stuck to it will fall into the firebox. [substeps] The air dampener will be a small knob on the front of the cast iron stove, that you should pull outward to open.

Answer: 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 cope when your spouse has dementia [title] Accept that your marriage will change. [step] Know that your marriage will not be an equal partnership anymore. Eventually, you will have to take on all of the responsibilities of managing your household, caring for your family, and even helping your spouse with the smallest of tasks. <sep> (A) One day, neither of you will be able to do everything at once. Even when your spouse is suffering, you will both have to take on the bigger roles. (B) There is no set amount of responsibilities the spouse must do in order to function on her own. Traditionally, your spouse's responsibilities include cooking, running the house, and work. (C) Your role as spouse will gradually transform into the caregiver, or even " parent " in the relationship. [substeps] For instance, you will likely have to do all of the household chores, make all of the decisions regarding your family and home, and provide constant supervision of your spouse. (D) You will make adjustments, and in the process, your spouse will continue to handle all the sides of your relationship. [substeps] Be prepared for major holidays, travel, projects, and professional holidays.

Answer:

assistant: C