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". 

Example Input: [header] How to plant switchgrass [title] Pick a switchgrass variety. [step] If you look for switchgrass at your local nursery you may just find a plant that's labeled " switchgrass, " but there are actually several varieties that differ in color and size. Switchgrass blooms for almost half the year, and during the winter and spring it's usually brown. <sep> (A) [substeps] Magnolia trees produce about 50% of the moisture. Maple trees produce 50% of the moisture per year. (B) Both varieties of switchgrass produce pretty stunning flowers, unique patterns, and flowers. Most also have phlebotomists at the planting areas where it grows. (C) These are factors to keep in mind when you're choosing a variety for your garden. Here are a few types commonly grown in home gardens : [substeps] Northwind: grows four to six feet tall and produces yellow blooms. (D) Pine needles will establish a base that's ready for planting a newer, more established fire from. [substeps] Switchgrass colors for more variety can also be found at a garden center or online.
Example Output: C

Example Input: A manager explains the players how to play jai-alai while a group of boys observe the training. then <sep> (A) , two teams play polo match with women that talk to the camera. (B) , the girls stand together and play on the field in different manner, while players stand on the sides of the field. (C) , the coach continuously shows the players how to use the position. (D) , the players take turns to hit balls, and the manager shows to hit the ball.
Example Output: D

Example Input: [header] How to make root beer [title] Sterilize anything that will touch your root beer. [step] This includes pots, funnels, tubes/siphons, measuring cups, and bottles. You can boil these items or simply run them through a dishwasher, as the high temperature will kill any unwanted bacteria. <sep> (A) ( you shouldn't touch the brew, but washing your hands is a good idea too. ) [title] Using a clean 2 liter (0.53 us gal) bottle and a dry funnel, add the ingredients in sequence as stated in the steps that follow. (B) [title] Make sure you have a small bowl or cup as well as a pot large enough to hold the beer. [step] Ideally, you would have a larger pot, but measuring cups are better. (C) You can also boil them in boiling water if the pot gets a bit wet. [substeps] It is wise to sterilize all pots, such as hand soaker or evening soaker. (D) [title] Measure the current volume of the beer into a measuring cup. [step] Change the measuring cup every three days or whenever you acquire your desired quality of beer.
Example Output:
A