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". 

Ex Input:
[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.

Ex Output:
A


Ex Input:
[header] How to make a simple hot compress for muscle pain [title] Run water from the tap until it is hot. [step] You may want to heat water on the stove or in the microwave, but you have more chance of burning yourself if you heat the water in this way. Instead, run the hot water from your sink to a temperature that is just hot enough for you to tolerate. <sep> (A) [substeps] Pour the water over the wound, rather than across it, and try not to let it overflow. Stick your fingers, or any other hand instruments closest to the wound, in the hot water. (B) This way, you don't put your elbows or head under the water and burn yourself. [substeps] Another option is to massage the water out using a hose. (C) [title] Find a towel that is large enough to cover your injury. [step] Fold a towel or washcloth to cover only the area you want to place the compress on. (D) [substeps] The water should be roughly the same temperature as the temperature of your body. If you do not have access to a water faucet at home, you may consider using a kettle to conduct the water.

Ex Output:
C


Ex Input:
[header] How to make strawberry muffins [title] Mix ingredients thoroughly in a large mixing bowl. Make sure strawberry puree is evenly distributed, and no lumps of flour or sugar remain. [title] Preheat the oven to 400ºf/200ºc. [title] Let batter sit while the oven preheats. <sep> (A) [step] This allows the rising reaction to get a jump-start. [title] Prepare muffin pan or cupcake pan, either by spraying with cooking spray or by adding cupcake wrappers. (B) [step] You may want to wait a few minutes for the batter to cool down more before you begin assembling your pumpkin muffins. You don't want your dough to be so delicate and sticky that it will soften due to wear and tear. (C) [step] Be sure not to over heat or the muffins may not bake evenly. When completed, batter into a 9-20 " x 9-12 " baking tray with plastic wrap. (D) [step] Mix until the batter is uniform, about 1/3 of the way thick. [title] Pour batter into greased muffin cups about an inch from each side.

Ex Output:

A