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 dye your hair with coffee [title] Brew some coffee. [step] Brew about 1-2 cups (240-470 ml) of organic coffee. The coffee should be organic, because non-organic coffees usually have added chemicals and preservatives. <sep> (A) For best results, make your own coffee by just boiling water for at least 30 minutes before you dye. [substeps] It's important to pour the brewed coffee into a shaker and bring to a boil. (B) [title] Reserve the coffee, if you don't already. [step] Coffee typically comes with an anti-aging coffee stain, which means it defroshes much faster in the summer than it does in the winter. (C) It is important to serve the coffee as soon as possible to ensure that it takes at least 24 hours to brew. If the coffee is sitting in your refrigerator, turn it cold to speed up the process. (D) Be sure to use a dark roast coffee or espresso. This will help make sure your hair will darken with the coffee.
[A]: D


[Q]: [header] How to wear a graphic tee [title] Wear your tee under a jacket. [step] For a casual, yet tailored look, try wearing your tee underneath a blazer. The blazer should fit you well and have a certain amount of structure to it. <sep> (A) Try half-tucking your tee into your pants for a super cool, slouchy look. [title] Pair your tee with high-waisted shorts. (B) [title] Choose a graphic tee that matches the slimmest part of your body. [step] Vintage t-shirts and jerseys are the most common graphic tees. (C) Try on the blazer and pull it down at the waist to see whether it feels snug at the top. [substeps] A professional would be happy to accommodate your slimmer waistline. (D) If you are not feeling confident enough to wear your work shirt in a more casual way, then go ahead and throw the tee in the garbage. [substeps] Choose a solid colored tee for a more polished look, but if you can still slip it in without distortion, wear it under a gray top.
[A]: A


[Q]: [header] How to clear your lungs after quitting smoking [title] Drink lots of fluids, especially water. [step] Drinking water will help your body to combat the congestion by thinning the mucus in your lungs and make it easier to cough up the mucus. It will also keep your body hydrated. <sep> (A) Drink an amount of water that is 12 to 24 ounces (226 to 113 ml) for the most reliable results. [substeps] Drinks throughout the day are generally the best thing to drink in the morning. (B) [substeps] You can also add a cough suppressant to water to help you relax while you are working to blow your nose. Make sure to drink hot, caffeinated drinks like coffee, tea, energy drinks, and milk instead of water. (C) This will also make it easier to cough up mucus. Water may also be a good source of sebum in your system because it means adding lots of water to your daily water intake, increasing blood flow to your lungs and respiratory system. (D) [substeps] Tobacco smoke slows the movement of the tiny hairs (known as cilia) that line our lungs and help to remove mucus. When you stop smoking, these hairs become more active and start to clear away the mucus built up in your lungs.
[A]:
D