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:
A black object appears and the woman is now placing it onto a long pole, she's back on the ladder and she's using the black object to help her hold up the border wall paper as she applies it all along the wall. when the woman <sep> (A) finishes the wall paper is covered by a blue curtain and she begins to pull the white rod back and forth as she continues to use the soldering iron to create the wall paper. (B) has drawn a border on the wall, she stretches up to get a better hold, three inches above the floor leaving the wall covered in white paper. (C) is done plastering, she takes the phone back and the actual wall paper is now in place and it seems to be the perfect size, exact size and it has sparkles, three big black holes in it and it has the laminate look to make it look very clean. (D) is done the camera pans to show the finished job and the outro appears that includes the website, company name, price and phone number.

Ex Output:
D


Ex Input:
[header] How to reuse [title] Don't recycle your next empty jug of milk. [step] Poke holes in the top of the lid. Then, fill it with water, screw the lid on and use it as a watering can. <sep> (A) [title] Use less using jugs than you think you need to. [step] Often, items such as juices, sterilizers and acids recycle too fast; try using the one they own when they need to remove something bad. (B) [substeps] Remember to refrigerate milk jugs without lids. Make sure that the lid isn't too tightly lined, you will need it for your construction projects. (C) [title] Save a large square egg crate, like the ones you find in bulk stores. [step] Set it on your desk and place your laptop on top. (D) This is what you use to water your plants while reusing the container. [substeps] Other containers made specifically for reusing the milk jug can be used instead.

Ex Output:
C


Ex Input:
[header] How to make a guinea pig toy [title] Take a piece of string. [step] Depending on how tall your cage is, make the string is long enough for the guinea pig to reach it without hurting itself. [title] Find a carrot that is suitable for the guinea pig. <sep> (A) [step] Give it a wash and a quick dry. Poke a small hole in the middle of the carrot. (B) [step] This will be either pink or yellow. Make sure it's big enough for the guinea pig to stand up and move around on. (C) [step] It may be big enough and will have two legs. This will be the main part of the guinea pig's cage. (D) [step] Make sure the carrot is soft as using a pair of wire or thumbscrews can damage your guinea pig's delicate skin. [title] Cut the carrot in half lengthwise.

Ex Output:

A