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". 
One example is below.
Q: [header] How to create a christmas tree forest [title] Consider the type of tree you want to plant. [step] There are a wide variety of christmas trees and include fir, pine, spruce, cypress, and cedar. These trees thrive in different climates and look different from one another. <sep> (A) It is important to research the tree before setting up your tree to try it out to make sure you can write the tree's growing season so that you can get the most supplies you need. If you're just interested in having a tree stand out, then make sure to check for the following : [substeps] Spruce trees. (B) [substeps] Trees green may be used in a mix of green and evergreen. Greens, such as pintos and olive oil, may be more delicate than these. (C) Where the trees grow together is up to you. [substeps] Spruce trees light up the night for hours in the morning and drown out the morning sunrise between afternoons. (D) Think about where your tree forest will be located and choose a tree that can thrive in that climate. [substeps] Balsam firs are a popular christmas tree species that grow in the northern united states and canada, in hardiness zones 3-5 or states like minnesota, north dakota, and montana.
A: D
Rationale: This is a good example. Only option D is about Christmas trees. So, it's the correct option.
Q: [header] How to grow monkey grass from seed [title] Harvest seeds from monkey grass blossoms. [step] Using snippers, clip the blossom stems that hold the seeds in place. Then, dry the stems by hanging them in a room with good air circulation. <sep> (A) Once they're completely dry, pull the seeds from each stem by hand. [substeps] Your seeds will not keep for more than a couple weeks without losing their capacity to germinate, so don't harvest them until you're ready to use them. (B) Remove as much dirt as possible and create a barrier of straw or stones between the seeds. [substeps] Alternatively, make a small pile of the seeds and soil on the ground and mix in as much as you need. (C) [substeps] If the seed is larger, you may need to snip away the few seeds that still remain on the stem. [title] Select a site with healthy or heat-resistant plants. (D) [substeps] Monkey grass grows quickly, and generally takes longer than other types of grass. Because nectar spills up through the seeds, this method works well.
A:
A