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:
[header] How to dye your hair with coffee [title] Brew some coffee. [step] Brew about 1-2 cups (240-470 ml) of organic coffee. The coffee should be organic, because non-organic coffees usually have added chemicals and preservatives. <sep> (A) For best results, make your own coffee by just boiling water for at least 30 minutes before you dye. [substeps] It's important to pour the brewed coffee into a shaker and bring to a boil. (B) [title] Reserve the coffee, if you don't already. [step] Coffee typically comes with an anti-aging coffee stain, which means it defroshes much faster in the summer than it does in the winter. (C) It is important to serve the coffee as soon as possible to ensure that it takes at least 24 hours to brew. If the coffee is sitting in your refrigerator, turn it cold to speed up the process. (D) Be sure to use a dark roast coffee or espresso. This will help make sure your hair will darken with the coffee.

Ex Output:
D


Ex Input:
A teen puts make up to an man on his face. then <sep> (A) , the teen puts a shoe to the face of the man to make makeup. (B) , the teen puts smooth make up on the man's face, then the teen puts make up on the cheek. (C) , the man puts perfume on the man's face and create a grimace. (D) , the teen puts mascara, lip sticks and paint the eyelid with an eyeliner.

Ex Output:
D


Ex Input:
[header] How to rejuvenate your smartphone [title] Back it up. [step] Want to add more apps and games into your phone but don't have enough dollars to get an sd card? All you have to do is back up all the data in your phone to an external device or the cloud so that you can enjoy the smartphone experience like it's new. [title] Clear the cache. <sep> (A) [step] Many of the websites and apps create cache files in your phone so they can access it faster next time you open them up. But doing this will only take memory from your device. (B) [step] It is possible that you're connected to an via network or shared network and so it is unusable. Clear your entire system by plugging your phone in a power outlet and have everything powered off. (C) [step] This can be done by pressing the back button so that the cache pops up. [title] Open zune's heat protection program. (D) [step] Files that are impossible to access are right on the cache. But remember, you aren't conning it, but trying to keep access from possible thieves.

Ex Output:

A


