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:
[header] How to section citrus fruit [title] Wash your hands and the fruit because the juice will flow as you cut. [title] Use a sharp, thin-bladed knife. [step] Peel over a bowl to catch the juice. <sep> (A) [title] Begin by cutting off the ends of the citrus fruit--orange or grapefruit. [title] You can see how thick the peeling is, so cut into the peel till you reach the fruit. (B) Squeezing the fruit before you cut it will cool it. [title] Immerse the fruit in lukewarm, unobstructed water. (C) [title] Cut in a way that is not too noticeable. [step] It doesn't have to be long and sharp-sharp, unless that is what you would prefer it to be. (D) [title] Cut the entire peel from the citrus fruit. [step] Make sure to slice down, making sure to avoid leaving any sharp or pointy edges of the citrus fruit.

Ex Output:
A


Ex Input:
[header] How to visit a jewish ritual bath [title] Speak to a rabbi or other authority competent in jewish law prior to using a mikvah. [step] While not a requirement, they can offer helpful advice and answer any questions you might have. [title] Understand the rules of a mikvah and how it works. <sep> (A) [step] Mikvah is private, and meant to be used only when washing a body and body. Mikvah can take up to 20 days in a week. (B) [step] The mikvah is constructed under very strict rules, and the water typically comes from a natural source, like a spring or even rainfall. [substeps] The mikvah is used mostly by chasidic and orthodox jews, though any jewish person may use it. (C) [step] Mikvah baths are prescribed for 10 days (7 days for girls and 16 days for boys). Mikvah baths are not ceremonial, and may come in either a 3 day or 4 day cycle, depending on your religious heritage. (D) [step] You can also create a small bathhouse already prepared to accommodate a children's bath, but you can also have a fancier bathhouse if you have the space and your budget permits. A mikvah is a fiduciary space whose functions you and your child can perform together.

Ex Output:

B