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 black coffee [title] Purchase freshly roasted, whole bean coffee. [step] If you can't purchase it directly from the roaster within a week or so of it being roasted, opt for a vacuum-sealed bag from a reputable national coffee-bean roaster. [title] Purchase your own coffee grinder, or grind it in the store. <sep> (A) [step] If possible, choose a burr grinder in place of a normal blade grinder. For best results, grind the coffee fresh right before brewing each day. (B) [step] Grind coffee beans in the near-black zone of a coffee grinder. You can use either a regular-size grinder or a pre-grind grinder to grind your coffee. (C) [step] Modern coffee grinders have drawbacks, as they require higher temperatures to make purified coffee. Where possible, purchase one that comes pre-boil. (D) [step] Print it onto a piece of paper, remove the lid from the coffee grinder, and grind the coffee beans in the machine's center. [title] Unplug the coffee grinder and plug it into the wall outlet.
A

Multiple colors and designs flash across the screen. women <sep> (A) are shown completing pairs of women's first pair. (B) gather onstage as they are about to perform. (C) are interviewing a man in a room in front of an orchestra, with a man sitting on a couch nearby. (D) alternate with hairspray and styles to help themselves style, style, and style.
B

[header] How to keep pet rabbits cool [title] Monitor the temperature. [step] The ideal temperature for a rabbit is between 55 and 70 degrees fahrenheit. They can tolerate temperatures as high as 85 degrees fahrenheit, if absolutely necessary, but anything higher will increase the risk of heat stroke. <sep> (A) As a result, monitor the temperature once per day and check for signs of heat fluctuation. [substeps] Some sources of heat fluctuation in rabbit cages include glass or opaque windows. (B) [substeps] If you keep your rabbit outdoors, pay attention to the temperature. Summertime is the most common time of the year to be concerned. (C) Temperatures from 54 to 79 degrees fahrenheit are considered to be at the ideal temperature for a rabbit's body heat. To check temperatures properly, hang a thermometer on your wall or window. (D) If the temperature is below a certain level, you'll need to get your rabbit's body temperature measured in millimeters instead of body degrees; thus, encourage your rabbit to move around in the coop to keep them cool. [substeps] If your rabbit spends a significant amount of time outdoors, consider keeping him inside his cage.

B