instruction:
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". 
question:
A woman cleans a cafeteria floor with a mop while occasionally talking to the camera. the woman <sep> (A) uses a mop on the floor under her chair and in a bucket. (B) uses the mop around the tables and some seating areas as well as around fork corners. (C) uses a mop nozzle to clean the floor. (D) walks to and cleans a different part of the cafeteria floor.
answer:
D


question:
[header] How to clean a raincoat [title] Check the label. [step] The care label is located on the inside of your raincoat near the collar. It includes information provided by the manufacturer on how to clean your raincoat. <sep> (A) There is no specific cleaning instructions that clearly say how to clean your raincoat. Keep an eye out on the outside of your raincoat, especially if you're using the method listed on the label. (B) A typical safety label might state that this is the safest to use and ask you to let it sit with you as you wear it. Because the manufacturer does not provide the information about cleaning a raincoat, you will not be exposed to certain fumes during the cleaning process. (C) You can read " care " or " cleaning " in the manual, and " cleaning " online. For example, some seous manufacturers may require that you wear an apron before cleaning it. (D) Once you've read the care label, follow its instructions closely in order to most effectively clean your raincoat. [title] Wash your raincoat in the washing machine.
answer:
D


question:
[header] How to create a solar panel water heater [title] Get a double-glazed unit for the sunlight to pass through. [step] Glaziers and window manufacturers sometimes have scrap units for patio doors or large windows that can be bought very cheaply. Glass with a low-emissivity coating such as pilkington k glass is ideal. <sep> (A) [title] Get a single-panel room radiator that is slightly smaller than the glass unit. [step] Scrap yards sometimes have old radiators, or ask a plumber who is refurbishing a central heating system. (B) [title] Cut out two panels for the light fixtures in your home. [step] They should be at least 24 inches (61 cm) by 36 inches (61 cm). (C) [title] Decide what sizes you want your solar panels to be. [step] Some of them will be big enough that able-bodied people are able to fit into them. (D) [title] Find a plug-in faucet. [step] A tap with a hard rod is best, as power is concentrated in the chamber.
answer:

A