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".

[header] How to unblock a toilet when you have no plunger [title] Cover the end of a mop with a plastic bag. [step] Pull the bag over the end of the mop. Then, tie it off or secure it in place with a rubber band. <sep> (A) You can also use a rag or a toilet cloth to help secure the bag if you don't have a mop. [substeps] Try using empty containers to provide more protection. (B) After securing the handle of the mop, throw it away. [title] Turn on the water faucet. (C) [substeps] Discard any waste that falls from the end of the mop. [title] Use the bucket or bowl to catch any urine that spills out. (D) [title] Plunge your toilet with the mop. [step] Use a forceful in and out motion like you would with a normal plunger.
D

[header] How to write a home improvement contract [title] Define what you want to do. [step] You can't write a good contract unless you can define exactly what you want to accomplish. Whether it's a major project like an internal remodel that includes adding rooms or rearranging walls, a new bathroom, or merely adding lighting, you must have a firm grasp on all aspects of the project. <sep> (A) [substeps] A full contract makes certain kinds of health and safety issues more likely. If you try to get your home as good as possible, the other person might skip ahead to any settlement offer. (B) Your objective should be clear from the outset, however. [substeps] Don't wait around for the right time. (C) [substeps] Make sketches or print out photos that closely match what you would like to do. This can help you when selecting a contractor and writing the contract. (D) [substeps] If you need to include a unique color scheme, don't just list and label certain, however. You don't need to thoroughly describe every detail of the project, either.
C

[header] How to remove glitter nail polish [title] Gather your supplies. [step] Get some nail polish remover, a cotton ball, and aluminum foil. If you don't have aluminum foil, a rubber band or hair elastic will do the trick just as nicely. <sep> (A) [title] Put a small amount of the mixture on the cotton ball and squirt the solution onto the dried nail polish. [step] Save any liquid look by placing it on the area you want to clean. (B) Before washing your nails, try rubbing vaseline onto your fingers. You may also try soap from your bathroom or a toothbrush if you are a leave-in hand-care professional. (C) Work the remover into your nail without rubbing. [title] Place a cotton ball in a dish of nail polish remover. (D) What you really want is something that will hold the cotton ball in place against your fingernail. [title] Soak a cotton ball in acetone-based nail polish remover.
D