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 make modeling clay in a slow cooker [title] Preheat the slow cooker. [step] To ready your slow cooker for cooking the clay, it's important to preheat it. Plug it in, and set the temperature to low. <sep> (A) That will allow the slow cooker to heat up slowly. [substeps] While children can help with the measuring and mixing of the ingredients, an adult should handle preparing and heating the slow cooker. (B) Cover the slow cooker and leave it somewhere out of the way where it won't be disturbed as it cooks. Doing this early will make your clay easy to mix and smooth. (C) Avoid getting hot coals inside the slow cooker. [substeps] Make sure there are no ashes or scraps of food stuck onto the bottom of the slow cooker before cooking the clay. (D) Allow the slow cooker to heat up to about 325 degrees fahrenheit (260 degrees celsius) for 1 hour. [substeps] Do not allow the temperature to go above the cool bar when you shut the electric slow cooker.
[A]: A

[Q]: [header] How to paint masonry walls [title] Remove any flaked or peeling paint from the masonry. [step] If the wall has already been painted, you need to remove any old paint that is loose, peeling, or flaking away. On an exterior wall, this is most efficiently done with a sandblaster. <sep> (A) New paint must be removed from the wall first, gently scraping around the edges with a rat-tail tail reciprocating scraper. This is most often done on exterior paint walls that are still meant to protect it from debris. (B) In areas where a sandblaster would be too messy and cumbersome, loose paint can be removed with a stiff wire brush and a paint scraper. [substeps] Failing to remove loose and peeling paint can result in the paint flakes mixing in with your fresh coat of paint and marring the finish. (C) [substeps] Make sure to turn off the water. Do not flush the wall down the drain. (D) If there is a paint-resistant paint strip still clinging to the wall, it may be painted to the wall as well, but not directly under it. [substeps] Using a sandblaster may be wise, but if the paint is not taking off, it may be better to start by sanding lightly.
[A]: B

[Q]: [header] How to make your own personalized mug [title] Purchase/find a coffee mug. [step] Make sure the mug has no writing or design on it. White is preferable to use as your " canvas. <sep> (A) " plus, printing how you intend to use the mug should not be a concern, unless the mug is intended to display or decorate a wedding album or publication. [title] Find 3-4 mugs of a similar color. (B) " [substeps] Repurpose one from home. Use a special mug your friend or family member loves from home as long as it is plain and has no design. (C) " if you don't have a mug, use some old postcard from 1920 to make your mug! If using a postcard from 2001, copy it down on the card. [title] Print and glue the postcard-style sticker. (D) " to draw on a mug, ask yourself what you prefer in the mug and what you might like less. [substeps] Do you prefer oval, round or oblong? Large or round? Upside and bottom? Either way, this is a good option if you're taking inventory of your mug and search for quality coffee mugs on the internet.
[A]:
B