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
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Q: The people start the race behind a closed and grated fence, which then opens and allows them to start racing from an elevated platform down onto the paved raceway. the racers <sep> (A) pedal with one person in a white jacket in the lead. (B) pass snow covered stands along a hilly road up above the as they ride up the hill past the tight stands and sandy roads of the garage. (C) sit against the wall on the track as they wait for the race to start. (D) pass through gaps while the passengers attempts to stay ahead.

A: A
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Q: [header] How to install foam bicycle tires [title] Let the air out of the pneumatic tire. [title] Insert a tire iron, or any tool with a slender handle and no sharp edges, under the lip of the tire. [substeps] Some companies include an installation paddle with the tires, or sell them separately. <sep> (A) [title] Pull the handle until the tire bolt-chain springs freely from the differential. [title] Locate an area that gets very little wind or rain. (B) Rub the handle between your hands, then raise them until they are parallel to the object, the tire fits perfectly when you put it in the proper position. Read the installation manual, and follow the directions on the product instructions. (C) [title] Flatten the tire 8-12 inches (20 cm). [step] Begin filling the tire's chamber at room temperature before you begin the installation. (D) If you don't have one, just find another long, durable object you can use as a lever. A tire iron or oversize screwdriver should work.

A:
D
****
