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 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.
B