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 buy wine for a gift [title] Go mid-range to high end. [step] It's tempting to buy a cheap wine to give as a gift, particularly if you don't know much about wines. However, cheap wine will taste cheap. <sep> (A) Buy the cheapest wines possible at low prices for a lot of fun and a nice gift. [substeps] Vintage wine is well worth the cost, but it won't taste well if you're not buying the bottle. (B) A higher end wine will go right up top and faster, so full quantities have more potential to go up the price of a bottle. [substeps] Anyway, consider your palate when determining whether a bottle is a good choice for your party. (C) [substeps] Spend time visiting upscale restaurants near your destination and learn about wines on your visits. Ask for the wine they recommend to see if you can trade it for cheaper. (D) That's not to say that you can't get a decent wine for a reasonable price. You just don't want to pick the cheapest wine, especially if you've never tasted it yourself.

A: D
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Q: [header] How to cure swollen gums [title] Talk with your dentist. [step] Make an appointment with your dentist if you notice that your gums are bleeding or irritated throughout the day. You can also bring up this issue with your dentist when you see them every 6 months for a cleaning. <sep> (A) [substeps] You can also get a referral to a dietician who specializes in simply treating swollen gums at home. They may be able to diagnose swollen gums by looking at how your gums feel. (B) You can ask that your dentist discuss all of the possible treatment options with you. [substeps] Your dentist will likely order annual x-rays for you. (C) Dentist visits will help clear up any bleeding and ease your pain. [substeps] Some gums naturally bleed after eating. (D) You might end up visiting your dentist twice a year for repeated cleanings. [title] Avoid gum infections if you suffer from a periodontal disease.

A: B
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Q: [header] How to kill weeds [title] Determine the ideal height of your grass. [step] All lawns have an ideal grass height that promotes healthy growth. Depending on climate and geography, your ideal grass height is between 1/4 inch (0.635 cm) and 3 inches (7.62 cm). <sep> (A) Grass heights can vary in different growing techniques, so it's important to measure your lawn's natural slope to determine whether it's level or uneven before you start your weed killer. [substeps] Most weed killers are mild and effective at killing weeds, but more aggressive to different grasses or shrubs. (B) In spite of this, some lawns may not be tall enough to prevent extreme frost. [substeps] A lawn that is not cultivated and maintained can be overgrown. (C) [substeps] Talk to a landscaping expert or a professional at your local home and garden retailer to get an understanding of the type of grass you have and how high it should grow. Keep grass a little bit longer when in doubt. (D) If you live in a temperate climate and consistently maintain a recommended lawn length, then you can calculate your lawn's height without needing to soil surability. [substeps] Make sure you factor in your local regulations when determining the ideal grass height.

A:
C
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