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


[Q]: A man holds a pair of boots while talking and showing dirty parts. then <sep> (A) , he ankle many large tiny cuts of wood on the floor. (B) , the man replaces some parts by cutting the shoes and cleanser. (C) , the man puts paste on the boots, then he puts the shoes on. (D) , the man put a clothe inside the boot and brush the shaft of the boot thoroughly.
[A]: D


[Q]: [header] How to make a good impression at a first job interview [title] Do your research and turn up knowledgeable. [step] This will boost your confidence and shows the interviewers that you did your homework and care enough to learn more. [substeps] Read the company website and press releases, and use google to find news articles. <sep> (A) Prepare answers to predictable questions, such as the introductory' tell me about yourself', and questions about your abilities, career history, personality and goals. These should not be stumbling blocks; rehearse well beforehand. (B) [title] Work hard, stay in touch with contacts to stay up-to-date on new responsibilities and to gauge the competition for your position. [step] This will also help you keep track of the current demands you're facing in every single job. (C) Apply to professional jobs with a smartphone or a scanner. Be aware of your email address so that you can check for news during the interview. (D) Read the company's information card as well, and listen to stories about their marketing or sales. Read the company's reviews, and go and take notes! [title] Improve your wardrobe.
[A]:
A