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 silver nitrate [title] Wear proper protective equipment. [step] The chemicals necessary for this process are highly toxic and can lead to injury if not handled properly. Eye protection, gloves, and a lab coat are necessary to remain safe. <sep> (A) You should also wear long, loose sleeves or long pants to protect yourself from these hazardous chemicals. Be sure you wear good quality work clothes. (B) Long pants and closed-toe shoes, preferably without mesh, should be worn to protect against floor spills. [substeps] Eye protection should completely cover your eyes and the sides of your eyes to protect from splashes. (C) Your lab coat can protect your skin and prevent pollution while working. Ask your local hazardous waste management company to provide you with an appropriate safety gear. (D) Wear full, protective safety gear as well to get the job done effectively. [title] Choose a location for your lab lab.

A: B
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Q: [header] How to visit the top 10 tourist destinations in london [title] If you are planning to visit london why not try visiting the following must-see places? [title] Visit the british museum at great russell street. The british museum's art collection includes artworks from all over the world. [step] The british museum houses the rosetta stone, sculptures from parthenon, and the portland vase. <sep> (A) Visit art galleries, amazing places, and places which you have never been. [substeps] Do not forget to ask for drivers from the london lights station, trinity quarter , 121 lights avenue-this is the only modern route to london. (B) The british museum is considered as one of the best in the world and it was established in 1753 via the act of parliament. The first collections were from sir hans sloane. (C) They are also accessible by either gps or facebook. [substeps] If you are going to the london museum, press the' get started' button. (D) Occasionally you may see art museums in london that serve as places to observe british history-like the australian museum. [title] Then take the ferry from oxford to mcdonald's, the capital city of london.

A: B
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Q: [header] How to use a spanish botijo [title] Buy a traditional botijo. [step] They are made of white or red clay. You might be able to pick one up on one of your travels to spain, or purchase one in a specialty store (either in your area or online) or through an importer. <sep> (A) These botijo usually come in medium or all-natural color. They are great for rural areas that are notorious for dry, cold, and relatively flat terrain. (B) [substeps] The shapes and colours vary, dependent on where you've purchased the botijo from. If the botijo is glazed and very artsy or heavily decorated, it's not suitable to drink from. (C) Unless you wish to physically alter your botijo to match your area's standards, go for a traditional spanish botijo one. To purchase a botijo from a specialty store you need to learn to recognize the pattern, the shape, origin, and textures of the botijo. (D) The botijo is believed to be high quality, but there are some budget restrictions. [substeps] Countries with very cheap or low-cost botijo include australia, uk, canada, mexico, , and california.

A:
B
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