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 choose a secondhand engagement ring [title] Visit a respected local jeweler. [step] Some jewelry stores carry a selection of secondhand or vintage engagement rings. Research local jewelers to find a trustworthy shop in your area. <sep> (A) Use the store's contacts to carefully inspect the rings and design design, but ask the jeweler if there are any indication that they intend to sell them. [title] Ask friends or family members who have similar ring engagement rings. (B) Alternately, ask your friend or family representative if they know of any reputable appraisers in their area. [substeps] Different shops will be exclusive, so ensure that the jeweler you seek matches your ring to that of your friend or family member. (C) [title] Look for a good price and type of ring you want. [step] Don't be picky when choosing online. (D) Consider how long the business has been open and ask friends or family if they are familiar with the business. A reputable jeweler will typically have an in-house gemologist and repair and resizing services.
[A]: D


[Q]: [header] How to make homemade hormone rooting powder or tonic [title] Use cinnamon. [step] Cinnamon prevents the growth of fungus. While it acts less as a rooting hormone, the fact that it curbs the fungal growth means that the plants have a great chance to grow without needing any additional help. <sep> (A) [substeps] Consider adding cinnamon powder to your herbal tonic each day by mixing small cinnamon cubes with water and using them for a week. [title] Try using flakes of dried marigolds. (B) [title] Try a silicon tablet or cacao tablet. [step] They can last up to a week, but commercially available forms are fast-acting. (C) [title] Dip or roll the cutting in ground cinnamon. [substeps] If dipping, tip some cinnamon into a cup and simply dip the cut stem end into the cinnamon. (D) Make sure that you use cinnamon in conjunction with regular root growth products, as cinnamon provides an excellent additive that can help regulate the risk of fungal infections. [substeps] Make sure that you use cinnamon on plants that are not affected by herbaceous or fungal infections.
[A]: C


[Q]: [header] How to make stuffed zucchini [title] Preheat your oven to 350ºf (175ºc). [title] Cook the beef. [step] Place some olive oil on a skillet and cook and stir the ground beef until it's nice and browned, for about 10 minutes. <sep> (A) [substeps] The stir-fry should reach a depth of 520 degrees fahrenheit (40ºf). Or, if you live in a hotter area, light ten minutes at a time and cook until hot enough to fry. (B) [title] Lay the zucchini with the olive oil on top of the beef. [step] Spread it out so that it's raised up a little bit, if you want a bit of firmness. (C) You can break up the beef as it crumbles while it cooks. Drain the extra fat from the beef and move it to a mixing bowl, using a slotted spoon. (D) [title] Drain the beef and transfer it to a serving bowl. [step] If you like, you can sprinkle the meat with finely chopped, fresh garlic cloves or tomato sticks.
[A]:
C