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 root the nexus 7 [title] Back up all information on your nexus 7 tablet. [step] All personal data will be erased from your tablet during the rooting process. [substeps] Sync your personal information with google's servers, copy your data over to your computer, or download a third-party cloud storage service app from google play store. <sep> (A) [title] Navigate to the wugfresh website at http: // www.wugfresh.com/nrt /. [title] Select the option to download the nexus root toolkit. (B) Open a folder that houses your cellular data, save the data you want to share and tap backup to backup it to your computer. [title] Follow the on-screen instructions for rooting. (C) [title] Install os x 10.1 on your tablet. [step] After installation, simply tap the " windows " icon on the home screen. (D) If you have a gigabyte device, your tablet will search your phone's applications folder for a root disk that will be used for rooting. [title] Download the latest android root installer.

Ex Output:
A


Ex Input:
. a small boy wearing a black and red striped shirt <sep> (A) performs flips and hand springs on a grassy field with a wild animal. (B) grabs a scooped ice cream scoop and scoops out all the melted ice cream. (C) hits a beer pong table in a dimly lit room. (D) is sitting with a drum set and playing drums.

Ex Output:
D


Ex Input:
[header] How to restore black plastic [title] Wash and dry the plastic's surface. [step] The olive oil will absorb best into a clean surface. If your plastic object is dirty, wash it with soap and warm water. <sep> (A) Avoid cutting the caulk from areas that absorb too much oil or too little water. Rinse all parts of the object with cool, soapy water when you're done. (B) Dry the affected piece of plastic on top of a clean surface and then gently sand it with a coarse sandpaper. This will remove any rough edges that might affect performance as you clean it later. (C) Dry it off with a towel before restoring it to prevent the olive oil from slipping off. [title] Pour a coin-sized amount of olive oil on a cloth. (D) If your plastic object has a stain or become discolored, dry it off first with a damp cloth. [title] Place olive oil into a small bowl.

Ex Output:

C