Instructions: 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".
Input: [header] How to cope with the sound of rats at night [title] Wear ear plugs. [step] Cushioned ear plugs are designed to comfortably reduce noise levels. Visit your local pharmacy to find some intended to wear while sleeping. <sep> (A) [title] Hide in a dark room while you sleep. [step] Rats can easily see through dark objects. (B) Since rats are noisier than humans, try to buy a pair that also earplugs. This will naturally decrease the noise levels in your home and increase the quality of your sleep. (C) You will need these to close your ears and help block out any unwanted noise. [substeps] If you live in the united states and can't afford to pay for a pair of ear plugs, invest in a wide earplug at your local pharmacy. (D) Put them in at night, and you might not be able to hear the sounds of rats. [title] Mask the noise with loud music or other audio.
Output:
D