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 clean rubber boots [title] Wipe away light dirt and grime. [step] If your boots aren't especially dirty, you can usually clean them easily with a damp cloth. To prevent dirtiness from building up on your boots and causing longer cleaning times, do this after each time you use your boots. <sep> (A) Before handling an object or stepping on something wet, make sure you wipe it away on a rag first. Use a mild soap and water to wipe off even the smallest traces of dirt. (B) [substeps] To increase the dirt fighting potential of your damp cloth, mix 1 tsp (5 ml) of dish soap with a ¼ gallon (1 l) of water. Douse your rag in this, and wipe down the boots. (C) [title] Grind three pounds (177 g) of dry powder on a coffee grinder. [step] The dry powder will help to transfer dirt and dust to the boots. (D) This will clear little dirt and grime off of your boots, leaving them looking brand new. [substeps] If your boots are already cleaned, you may need to consult a shoe store or partner to inspect them for a better cleaner.

A: B
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Q: [header] How to take care of butterflies [title] Start with baby caterpillars. [step] If this is your first time raising caterpillars, you might want to start with a caterpillar kit. You can order a kit online and choose from a variety of butterfly species. <sep> (A) You can store all your butterflies at once in the kit. Just make sure not to overpack them in 1 location. (B) [substeps] Choose a caterpillar you'll be able to collect for some extra protection. You don't want a caterpillar whose wings are incredibly weak. (C) Make sure that the caterpillar is about 3 feet (0.6 m) in length. [substeps] If it is not small enough, you will have to wait several hours before you begin the process. (D) The kit will come with everything you need to raise the caterpillars into butterflies. If you prefer, you can instead find caterpillars in your neighborhood and provide what they need to become healthy butterflies.

A: D
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Q: [header] How to care for bulbs [title] Water the bulbs. [step] You should water bulbs after planting them. This will help the plant develop roots and also set the soil around the bulb, eliminating air pockets. <sep> (A) [substeps] Don't water shallowly as the bulb may be planted pretty deep and the water needs to soak the roots thoroughly. Add about one inch of water every week after the plant starts flowering if the rainfall is not adequate in your area. (B) It's not necessary to water the bulbs during the winter if you live in a cold area or have established roots in colder areas. [substeps] If you live in a hot climate and have established roots in your soil, you can still water each bulb. (C) [title] Do not water your bulbs during winter as they do not receive enough sun. [title] Place your bulbs in an area with full sun. (D) [substeps] Ideal days for watering include april through july. Avoid misting by lightly misting the bulbs once per week.

A:
A
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