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 get rid of white tongue [title] Call your doctor or dentist if you have other symptoms that together might indicate a more serious condition. [step] Other symptoms to check for include : [substeps] Pain in your tongue dehydration fever a white tongue that doesn't go away after several weeks [title] Know the difference between white tongue and geographic tongue. [step] Generally neither condition is serious. <sep> (A) But for certain people, this is known as " tongue illness. " [title] Learn about the signs of tongue disease. (B) [title] Look for a white tongue tongue or tongue with a horizontal, smooth surface that blocks food from getting into the mouth. [step] This means that the tongue has a roof which it cannot move towards. (C) However, it does lead to significant pain. It is thought that the other condition if it occurs is called listerimucoccus nomisymmetrophy (tdd), a genetic condition that asks for unusually dark tongue. (D) [substeps] Geographic tongue occurs when you have smooth lesions that look like areas where the bumps on your tongue are worn away. Foods with strong tastes (spicy, acidic, salty) may cause you pain.
[A]: D


[Q]: [header] How to clean a raincoat [title] Check the label. [step] The care label is located on the inside of your raincoat near the collar. It includes information provided by the manufacturer on how to clean your raincoat. <sep> (A) There is no specific cleaning instructions that clearly say how to clean your raincoat. Keep an eye out on the outside of your raincoat, especially if you're using the method listed on the label. (B) A typical safety label might state that this is the safest to use and ask you to let it sit with you as you wear it. Because the manufacturer does not provide the information about cleaning a raincoat, you will not be exposed to certain fumes during the cleaning process. (C) You can read " care " or " cleaning " in the manual, and " cleaning " online. For example, some seous manufacturers may require that you wear an apron before cleaning it. (D) Once you've read the care label, follow its instructions closely in order to most effectively clean your raincoat. [title] Wash your raincoat in the washing machine.
[A]: D


[Q]: [header] How to maintain your kitchen knife [title] Always cut on a cutting board. [step] Using marble, granite, or any other solid surface is too hard and unyielding for a kitchen knife. This can dull your knife much more quickly. <sep> (A) [substeps] Choose a wooden cutting board instead of one made of plastic or any hard, solid material, such as glass. [title] Sharpen and hone your knife regularly. (B) You will need to use a sharp cutting board that is 3 to 4 feet (1.8 to 3.2 m) in diameter to cut. Marble is also particularly sensitive to pressure and is prone to rust. (C) [title] Sharpen your knives using a spare set of knives. [step] These knives have rounded sides that are meant to make the blade sharper. (D) To prevent damage to the knife, never apply pressure to the handle. [title] Make a point of removing all fat and weed from the blade.
[A]:
A