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". 

Input: Consider Input: [header] How to band a goat [title] Purchase an elastrator from a farm and ranch supply store. [step] It is a metal tool that is used to secure the rubber band around the scrotum. [title] Buy castration bands. <sep> (A) [step] They can be purchased from your local farm supply store or from a municipal livestock supply store. [title] Buy a leather or gauze band. (B) [step] Don't use household office supplies for banding. The bands should be thick enough and tight enough to lead to castration within a few weeks. (C) [step] These are simple, metal with metal screws, two prongs, and a ribbon loop on either end. [title] Cut a small hole in each long length of the band. (D) [step] It is a device that attaches the separate rubber bands, wires, tubing and pieces of cork/plastic. It is available at local farm supply stores, ranch supply stores and hardware stores.

Output: B


Input: Consider Input: [header] How to bathe a pregnant guinea pig [title] Select a shampoo. [step] There are all types of shampoos for pets. For your guinea pig, make sure the shampoo is made specifically for small animals (it should say so on the bottle). <sep> (A) Otc shampoos and chemical shampoos are good choices. Avoid shampoo labeled specifically for guinea pigs and those formulated for females. (B) This way, both animals can use the shampoo and their fur will be clean. While many shampoos claim to free your guinea pig from " reye's syndrome ", this actually isn't true. (C) [substeps] Make sure that it is specially formulated for pregnancy-therefore not designed for your guinea pig. You can get shampoo from the veterinarian. (D) A small animal-specific shampoo will keep your guinea pig's skin from drying out or becoming irritated. Since your guinea pig is pregnant, the shampoo should also be non-medicated to prevent ingredients absorbing through her skin that could harm her unborn babies.

Output: D


Input: Consider Input: [header] How to get grey blue hair [title] Evaluate your current shade. [step] If your hair is medium brown or darker, this look can be difficult to achieve. You'll have to bleach your hair two or three times to get it light enough to apply the grey-blue tones. <sep> (A) However, you can still achieve grey hair by changing your color or by mixing your hair dye with a developer. Try to match the hue of your hair to your current shade. (B) And since you'll only be dying this dye for three or four years, rinse it out and select a shade that's right for you. [substeps] Grey hair can come in many different shades, from platinum blonde to gray. (C) If your hair is very light brown or darker, the grey-blue colors and the blue mix well. If you can achieve this look, say you want your hair to look like grey. (D) Bleach is very damaging to the hair, so waiting 3 to 6 weeks between bleaching sessions is recommended. If you still want to go for it, just know that you'll have to invest quite a bit of time and energy into getting there, and you may significantly damage your hair in the process.


Output: D