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 get your ferret spayed or neutered [title] Verify that your ferret isn't already spayed or neutered. [step] Ferrets sold at pet stores are almost always already spayed or neutered. Many breeders also spay or neuter kits, or young ferrets, before selling them. <sep> (A) This will ensure that your ferret will not be harassed or misredirected. [substeps] Ferrets that already have an owner must also be spayed or neutered before they sell them. (B) [substeps] You can get your ferret spayed or neutered immediately upon the transmission of your ferret, leaving a good deposit for a new starter puppy, but will have to go through much more patience. [title] Ensure that your ferret can still eat. (C) [title] Familiarize yourself with the type of breeding location you need. [step] The first hurdle in breeding a ferret is to get it spayed or neutered. (D) [substeps] Purchasing a ferret that's already spayed or neutered is in your best interest, since the operation can cost a lot of money. If the store is uncertain, you can also take the ferret to the vet.
Example Output: D

Example Input: [header] How to set up a caique parrot habitat [title] Choose a large cage. [step] Although the caique is a medium-sized bird, it needs a great deal of space. Select a cage that can accommodate this energetic parrot. <sep> (A) New cages tend to have more cages that are more hearty and safe, as these should not be bigger than 20 square feet (36 square meters) on all sides. If you're keeping a senior parrot, choose a caique that has built in cage work. (B) When it comes to caique cages, bigger is always better. [substeps] The smallest cage for a single caique should be 24 x 24 x 24 inches (60 x 60 x 60 cm). (C) The standard size for caique quarlings are 4 inches (10 cm) and five feet wide. Add a basking bulb, separate the block of wood with coarse wood shavings and place the bottom on a cooled to room temperature examination table. (D) For a more fluid experience, a small cage that you can comfortably surround your bird in will help to make the experience more comfortable. [substeps] A second enclosure can provide the environment your bird will be inhabiting without having to create a constant environment, changing its structure and its oxygen levels.
Example Output: B

Example Input: [header] How to reset your fitbit [title] Plug your charging cable into your computer. [step] Use the usb ports on your computer to plug your fitbit charging cable into your computer. [title] Plug your fitbit tracker into the charging cable. <sep> (A) [step] The fitbit tracker is a circular, gray thread on the top-right corner of your tracker. [title] Press and hold the " f8 " button. (B) [step] The charging cable is specifically designed to connect to your fitbit tracker. [title] Press and hold the button for 12 seconds. (C) [step] The charging cable is portable and can be plugged into a computer by attaching an adapter to the charging cable. [substeps] Connect your fitbit charger to your computer using its charging cable. (D) [step] The fitbit won't work for battery unless you have one, as it cannot charge the device, not including also your phone. [title] Power on your fitbit charger and turn on your device.
Example Output:
B