Detailed Instructions: 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".
Q: [header] How to make soapy ammonia cleaning solution [title] Locate concentrate ammonia solution. [step] It's readily available in supermarkets in the household cleaner sections of larger supermarkets in the us. Otherwise, try hardware shops and places that sell industrial cleaners. <sep> (A) You will probably want to buy the smallest possible bottle since you won't need a lot. [title] Use rubber gloves and goggles-ammonia can burn skin and eyes. (B) Look for plugs and valves which is not oily. [substeps] Dishwashers and dryers are also good places to find concentrated ammonia. (C) [title] Get into the habit of replacing spills. [step] Every time you add dishwashing liquid onto a sink or toilet, add a dab of concentrated solution to the water. (D) [substeps] Fortunately, it comes in liquid form, rather than bath/shower cleaning liquid. This liquid can also be water, soap, detergent and other products.
A:
A