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 make cheap vodka taste better [title] Pour the vodka though a standard water filter. [step] The key ingredient in your filter that removes impurities from the vodka is generally a charcoal filter. This kind of filter removes oil and sugar, along with any other impurities, from the vodka that that make it taste less than delicious. <sep> (A) Carbon, carbon plug, or air purifier filters work well for this purpose. [substeps] You can make either aluminum or a glass filter though whatever you make make will accomplish the same thing. (B) Because the filter is designed to filter out oil and sugar, you only need a pinch of that oil to make the vodka taste better. [title] Replace the filter if you don't like how the vodka tastes. (C) [title] Use water or a mixture of water and vodka. [step] If you want a less dangerous version of the same taste and texture, add water or a mix of water and vodka. (D) [substeps] Using a small funnel can help you pour your vodka into your filter's reservoir more easily, resulting in less liquor spilled. [title] Agitate your vodka and keep it in a cool place.
Output:
D