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 wash a blanket [title] Fill a tub with cool water and add detergent. [step] Find a tub or basin large enough for your blanket to fit in and fill it up with cool water. Mix in mild detergent and let it spread through the water. <sep> (A) You can use a washcloth or a soft toothbrush to scrub the blanket and prevent it from sticking to the water. This should prevent dirt from accumulating on the blanket as you wash it. (B) You'll essentially be doing the same thing as a washing machine on a gentle setting, only manually, which gives you greater control over how the blanket is treated and helps ensure that every part gets clean. [substeps] Don't fill the tub up too much or it may overflow when you put the blanket in. (C) [substeps] If the water feels too hot, fill a small bucket with cool water and add your blanket. You can also place the blanket in the sink and let it soak for a minute or two to warm up the water, so that it can absorb the detergent. (D) Allow it to sit for 5 minutes, then wipe it with a clean, soft, lint-free towel. [substeps] Ensure to keep the water to at least 60 percent of the required temperature as you wash your blanket.
Output:
B