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: [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.
Solution is here: D
Explanation: This is a good example. Only option D is about Christmas trees. So, it's the correct option.

Now, solve this: [header] How to clean keds [title] Remove laces and inserts. [step] Before you clean your keds, you should take out both the laces and any inserts inside of the shoe. The laces can be cleaned in the washing machine, by hand in the sink, or simply replaced. <sep> (A) [title] Soak your keds in water for 10 minutes. [step] You can use your cleaning solution-soap, warm water, or any liquid that you like. (B) You should set aside the inserts until you are finished cleaning. If they are smelly or dirty, you may want to replace them. (C) [title] Soak the shoelaces and inserts. [step] Place the lace and inserts inside a bowl or cup and gently soak them in a sponge full of water. (D) [substeps] This step will be optional, but may be recommended for those keds where you're cleaning larger packages or clothing items. Dry your keds with a microfiber cloth.
Solution:
B