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: [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.
Example solution: D
Example explanation: This is a good example. Only option D is about Christmas trees. So, it's the correct option.

Problem: [header] How to zest a citrus fruit [title] Wash the citrus. [step] Before you get started, run the fruit under a stream of cool water, then buff it gently with a clean cloth or paper towel. A light rinse will help remove the natural waxy residue on the outside of the fruit. <sep> (A) [substeps] Make sure that the fruit is completely rinsed off before proceeding to the next step. Most citrus fruit will have the bruised part removed, but with the middle part, you can alternate between refreshing the peel with water and removing the skin. (B) [substeps] The work also is best done in the late evening, after the sugar has evaporated. [title] Make an acidic citrus by plunging a bowl of salt in the water. (C) You can also give the citrus a quick soak in a shallow bowl of water. [substeps] It's important to wash citrus fruit any time you're zesting, since the outside is the part that will actually be going into your food. (D) [title] Put the zest mixture in a dropper. [step] Commercially available zest comes from the peel of the citrus tree.

Solution: C