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". 

Ex Input:
[header] How to diagnose and treat anal gland disease in cats [title] Notice the cat favoring their behind. [step] If there are problems with the anal glands, the cat will pay attention to it in a way that you will notice. They may lick it or bite at it. <sep> (A) This is a sign of a stressed cat. If you know that the cat is stressed and doesn't want to eat, keep an eye on the cat's back to see if it is depressed. (B) However, the cat may not lick at the glands. This behavior is a sign of poor health. (C) They may also scoot their behind across the floor. [substeps] Your cat does this to try and alleviate the pain and itchiness. (D) The cat also may cry out, disgust, or gain weight due to the condition. Take your cat to see your vet and get an answer right away.

Ex Output:
C


Ex Input:
[header] How to protect your intellectual property [title] Know the three types of intellectual property. [step] There are three different types of intellectual property that you and your business may have created. Each can be protected under the law, but there are different categories for each one. <sep> (A) A shortcut to remember the differences between the three is that a patent protects the invention, the copyright protects the artistic expression of the invention, and the trademark protects the brand name. [substeps] If you have invented an item or system that is new, useful, original, or ornamental, then you may be able to patent it. (B) [substeps] Trade secrets are the only kinds of intellectual property that you and your team can sell. Goodwill is the only type of intellectual property which you can earn without investment. (C) Realize the following basic categories : [substeps] Intellectual property. This is non-exempt from federal and state laws. (D) To protect intellectual property, you must be licensed, insured, and have information about how this performance impacts you and those involved. [substeps] Private intellectual property is allowed only if there are only two parties involved, or if the business isn't trademarked.

Ex Output:
A


Ex Input:
[header] How to use dryer sheets outside the laundry room [title] Wipe down your laundry room with dryer sheets. [step] If you have spare dryer sheets after doing your laundry, use them to clean up. Dryer sheets can easily remove things like dirt, debris, and spilled detergent from your machines. <sep> (A) [substeps] Wipe down the sides of your washer and dryer with the sheets. If there is any spilled detergent, use your dryer sheets to remove it. (B) If you're worried about germs, do not use dryer sheets during the 24 hour period between cleaning hours. Cleaners that are designed for this purpose will only remove them if they specifically show the symptoms of microorganisms. (C) [substeps] This removal technique starts with the dryer sheets in front of your machine and moves on to the next one. Avoid using dryer sheets outside the dryer room since moving up and down is ideal. (D) If there are a lot of food particles and other debris, wipe these out with something like a paper towel. [substeps] Laundry sheets will stick to your clothes while they dry, but make sure to remove any lint or dirt.

Ex Output:

A