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 identify a siberian tiger [title] Look for long, thick fur. [step] Because siberian tigers live in colder climates than other tiger subspecies, they have considerably thicker coats. Most other tigers will have a very thin layer of fur close to their body. <sep> (A) [substeps] Siberian tigers often have thin coats that are made from specific materials that repel the cold and will not compete with the other types of fur. Siberian tigers are known as " rhode ors, " or " jumpers. (B) [substeps] Siberian tigers also typically have white or tan skin, without shades of brown. Their fur will be pale and coarse, with geometric stripes or patches of fur along their body. (C) Siberian tigers, in contrast, will look a bit puffy because of their longer fur. [substeps] Because of their colder environment, siberian tigers will even have thick fur on their paws. (D) If your siberian tiger is a larger sized tiger, then look for a small with a long coat or big. [title] Check for eight or more striped stripes.

Answer: C

Question: [header] How to add potassium to an organic garden [title] Mix in muriate of potash or sulfate of potash. [step] Muriate of potash, or potassium chloride, and sulfate of potash, or potassium sulfate, are natural minerals. Muriate of potash tends to be cheaper, but the chlorine it contains can hurt the helpful microbes living in your garden's soil. <sep> (A) Gently mix these two together first, then add the zinc sulfate. [substeps] Zinc sulfate is readily available online, or in desalination solutions. (B) [substeps] You can substitute sodium thiamine (ipsin) or baking soda for sulfate because it is the most acidic fertilizer. Sodium thiamine is a common fertilizer in agricultural and organic gardens. (C) Sulfate of potash is safer, but it's a bit more expensive. [substeps] Check your product's label for specific instructions on how much to add per square foot or meter. (D) [substeps] There are many ways to add potassium to soil: you could use the most common method. You could sift the potassium into an empty feed colander and cool it before dropping it off.

Answer: C

Question: A professional tennis match is played during a tournament. The players talk on headsets during the match. a man <sep> (A) is shown in a room playing peolpe. (B) prepares to serve the ball to start the match. (C) point puts the ball in the net. (D) in red waits in a lane with a basket.

Answer:
B