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 Q]: [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.
[EX A]: B

[EX Q]: A man demonstrates how to walk across and navigate a slackline in a grass courtyard in front of apartments. the man <sep> (A) demonstrates how to traverse a low brick fence on a residential street. (B) walks slowly across the slackline while talking and stopping to talk to passerbys. (C) stands on a slackline balancing himself with his arms before the clip cuts to him interviewing. (D) poles backward, glasses on and he begins to walk while holding the slackline while walking across the courtyard.
[EX A]: C

[EX Q]: A woman in black has her hair rolled in curlers. the woman <sep> (A) gives two piercing earrings to the girl. (B) mashes olive oil on her white hair and then parts the hair and fix it. (C) unroll the curlers and put it down. (D) pulls the hair object out.
[EX A]:
C