TASK DEFINITION: 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". 
PROBLEM: [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.

SOLUTION: B

PROBLEM: [header] How to fix cake disasters [title] Fix a burned cake. [step] The first sign is often the smell and that " d'oh! " moment as you realize you have forgotten the cake! Try the following fixes before tossing it. [title] See if it is possible to cut off the burned parts. <sep> (A) [title] Remove burnt parts at home or in a garage/shed. [step] The heat from burnt pieces of cake can sometimes smother something. (B) [step] Does it melt away in the oven? If it doesn't, lower the oven temperature to 350 ° f (177 ° c). If it cannot, gently pour cake remover over the burnt parts. (C) [step] Do this with care and only if the cake is slightly burned. Cut the base and edges off and cover with frosting or icing. (D) [step] If it is and they are still alive, then you may be able to clean those parts and replace them, but beware that many cake shells have un-damaged parts. A possible alternative is to cut the cake's parts off while the fire is still out.

SOLUTION: C

PROBLEM: [header] How to make middle eastern lamb stew [title] Trim the lamb and grate the onion. [step] Get out 2 pounds (907 g) of lamb shoulder and carefully cut away any excess flaps of fat. Use a sharp knife to cut the lamb into 1-inch (2.5 cm) pieces and set the lamb aside. <sep> (A) [substeps] Doing so can help keep the broth moist, or you can drizzle it with water to help it drain off on itself. [title] Saute the turmeric and garlic. (B) [substeps] Your knife shouldn't go in between the lamb and the ground. If the lamb is much bigger than is normal to your taste, sprinkle in a little cumin instead of black pepper. (C) You'll also need to get out one small onion and peel it. Grate the onion using a cheese grater. (D) [substeps] You can flavor the pieces by adding various spices. If you prefer savory lamb, grate 1/2 cup (120 ml) of sweet onion and 1/3 cup (120 ml) of pickled leek.

SOLUTION:
C