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". 

[EX Q]: [header] How to learn to speak afrikaans [title] Take an introductory afrikaans class. [step] Enroll in an introductory class at a local community college, or at a language learning center. You can also find organizations dedicated to language learning online. <sep> (A) Online classes are convenient because you can learn at your own pace. [substeps] Taking an introductory class will help you develop a solid foundation in the language. (B) Online afrikaans are very easy to learn, and they are easy to translate. [substeps] You can get an introductory afrikaanic class at a language learning center. (C) [substeps] The language federation at the children's development center maintains a directory of all language learning organizations across all states. You can also find native afrikaans reading online through the font bar at the bottom of the page or clicking " language group " in the top right corner. (D) [title] Immerse yourself in afrikaans from a young age. [step] Select a language you are receptive to and that you truly understand.
[EX A]: A

[EX Q]: [header] How to make a mimosa bar [title] Choose a few types of sparkling wine. [step] No mimosa is complete without the bubbly. Start by selecting a few types of sparkling wine for your bar to accomodate different tastes and mix with different juices. <sep> (A) Dijon has 5 glasses : 1 glass white , 1 glass sparkling wine , 1 glass light rum and 6 glasses of bubbly. Different juices add different flavors, but not an exact science. (B) [substeps] Sparkling wines, like cabernet sauvignon, champagne liqueur, or wineries, tend to have a more tart sense. Sparkling wines, like white wine, are versatile and can become cold easily. (C) Try wines like : [substeps] A cava or brut for a dry taste prosecco for a light but sweet flavor champagne for a rich and creamy flavor sparkling rosé for floral and fruity notes [title] Figure out the amount of wine you need. [step] The average bottle of sparkling wine is enough to make about six to eight mimosas. (D) [substeps] Reds, sudafed red, and a third color (one or more a grape have) will combine well and produce the mimosa. Red may have slightly acidic undertones so it improves the sweetness of both waters.
[EX A]: C

[EX Q]: [header] How to change the string on a lawn trimmer [title] Prepare the line. [step] The length and width of line you need varies based on your trimmer. If you purchase the wrong width of line, the trimmer will not work correctly, so don't waste your money by simply guessing at the hardware store. <sep> (A) If you are not sure what size line your trimmer uses, check online-the manufacturer's website often has instructions, and if not the customer service department should be able to help you. The length to which the line should be cut also varies, from around 10' to 25'. (B) [substeps] Use a marker to mark the line so you can differentiate it from other lines so you know what kind of tool to use to cut the line. If the length is the same, the string you use to cut the line may not work properly. (C) Most trimmers come with a flexible line, rather than a heavy line, so take your time to figure out the best way to customize it. [substeps] Make sure your line length is proportional to the attachment of the trimmer, so the line width will not change when you trim off a grass shoot. (D) [title] Attach the line to your trimmer with a detachable clip. [step] On both trimmers, find a start on the length portion of the trimmer and use the detachable clip to attach the entire line to it.
[EX A]:
A