You will be given a definition of a task first, then some input of the task.
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 maintain a corian countertop [title] Use dish soap and water to wipe down the countertop. [step] For everyday dirt, grime, and food residue, wet a sponge or soft cloth. Squeeze out a small circle of dish soap onto the sponge, and rub the soap into the sponge to get a soapy lather. <sep> (A) Wipe the sides and corners to get stubborn stains from grease and coffee, potato pulp, or anything else. [substeps] A standard kitchen sponge works nicely for this purpose. (B) Let the sponge dry and repeat the scrubbing process for all the countertops. [title] Scrub with the whiled stone soap. (C) [substeps] If you want, you can make your own mop out of a washcloth, but don't scrub too hard with that. If you don't want to use a cloth, however, you can invest in a test liter bottle of dish soap and water. (D) Wipe down your entire countertop with the sponge. Rinse the soap off the counters with a damp sponge.
Output:
D