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

A police officer is riding a horse down the street very slowly. many bystanders <sep> (A) cheer as he gets closer. (B) are walking by, cars are passing and casually moving along. (C) are standing up nearby. (D) join in to help him, and several other cars come along.
B

A a white dog without the use of its hind legs is outside with its owner on the porch. they <sep> (A) begin to walk down the driveway as the camera follows them. (B) are in various environments including by the sea, landscapes, and residential thick forests. (C) get inside and begin wandering around. (D) opened it's door and let it out so it could walk around.
A