You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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".

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

New input: [header] How to breed tarantulas [title] Get a mature pair of tarantulas. [step] This can be a tricky part unless they are all mature. Males that are mature will have mating hooks on their first pair of legs and females have a flap of skin (spermacae) between their book lungs. <sep> (A) [substeps] Generally, a healthy tarantula will have two sets of eyes and ears as well as two, full sets of open legs. You may need two new pairs of legs for each breeding pair. (B) Males (with underbellies) will have two separate sexual organs in their first pair of wings, like the penis and vagina. [substeps] You don't want to squeeze your fastest breeding pair with three females! For the males to survive, it means they need to be in their original pairs of wings. (C) They are male, so you can remove this flap early on in the breeding season. [title] Start breeding tarantulas at least 30 days before the wedding date. (D) [title] Have the female in a larger cage than usual and leave her to settle down [title] Once she has settled down feed her a little bit more often. [title] About a week before the pairing, put the male in a smaller container and make sure it is concealed.
Solution:
D