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:
People are standing around a christmas tree. They put lights onto the christmas tree. they <sep> (A) decorate the tree as its decorated. (B) throw wrapping paper onto the tree. (C) begin to put decorations onto the christmas tree. (D) put march lights onto the tree as well.

Ex Output:
C

Ex Input:
[header] How to make a great first vlog [title] Make sure that you have the right equipment. [step] You don't need an expensive dslr camera and microphone, but you should have a camera that can handle video in 720p at the very least. You should also have an external microphone that hooks up to the camera. <sep> (A) Your vlog will only work if you have a mp3 player. [title] Get good quality editing software for your camera. (B) [substeps] For digital vlogs, you will need one with both video and audio capabilities, such as a vlog. [title] Change the camera speed when you make it first vlog. (C) [substeps] If you have a smartphone (or even a tablet), you don't need to buy any equipment to complement it. Sound is just as important as video, so don't neglect your microphone if you buy a dedicated one. (D) [title] Set up your vlog in a well-lit area. [step] If you plan to be shooting at night, you might as well go indoors, or it might be too stuffy and possibly might be too warm.

Ex Output:
C

Ex Input:
He then takes out a tablet that has a picture of pikachu on it and begins decorating the cake with its face. the cake <sep> (A) mixes all together then decorates the cake like a face with wings in it. (B) is finally finished, and the man begins talking and picks up the cake to show the final product. (C) is shown as well as the vase of flowers he's shown. (D) is being eaten by her and stacking things up on the top.

Ex Output:
B