instruction:
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". 
question:
[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.
answer:
C


question:
[header] How to select perennials for edging [title] Choose perennials that can stand up to physical abuse. [step] Plants that are used to edge walkways will likely have to deal with a lot of foot traffic. Hardy, resilient perennials will therefore be a good choice. <sep> (A) [substeps] Perennials with artificial foliage won't stand out in an outdoor garden. Perennials with small bulbs can stand up to many forms of heavy concrete traffic. (B) [substeps] If you plan to display perennials on walkways, choose perennials that can stand stand up to a daily blow to the nose, or that will tolerate touch. [title] Look for perennials that can handle direct sunlight. (C) [substeps] Protect plants like roses, shrubs, and hedges with plastic. [title] Pick perennials that can withstand garden shock. (D) Examples of perennials that can withstand abuse from foot traffic include lilyturf (genus liriope) and brass buttons. [title] Select perennials that provide thick coverage.
answer:
D


question:
[header] How to clean the inside of a washing machine [title] Fill the machine with hot water. [step] Newer models of front-loading machines often have self cleaning cycles, so if this is the case with yours, fill it with hot water on this setting. If you don't have a self-cleaning cycle, just fill it with hot water. <sep> (A) [title] Add a quart of bleach for stain removal. [step] If the inside of your washer is stained, bleach will do the trick. (B) [title] Add fabric softener into the water. [step] It can be as convenient or as time-consuming as you like, but fabric softener works by helping kill germs, which is why use it rather than the regular soap. (C) [title] Soak a clean cloth in the hot water. [step] The cloth should be damp, but not soaking-wet, but not too wet that it becomes cold. (D) You should only use hot water to turn the machine on. [substeps] You can turn the machine off manually.
answer:

A