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 install debian [title] Back up any important files on your computer. [step] Installing debian on your machine will clear your entire hard drive and reformat it, erasing all data in the process. Store your important information on a removable drive before beginning the installation. <sep> (A) [title] Navigate your web browser to the debian website. [step] Debian is distributed through www.debian. (B) [substeps] If you don't own one, ask a sales associate at your bank to store your files in your. Otherwise, you can install them on your own hard drive. (C) [title] If debian has dependency on your operating system in the previous step. [step] Some debian programs allow for debian to be connected to external storage like the usb connector, vertical port or the simplest root driver. (D) [substeps] Make sure to click the " save/install " button right on the back of the removable drive. [title] Locate and modify the " reason for installing debian " website.

Ex Output:
A


Ex Input:
People are standing around a christmas tree. They put lights onto the christmas tree. they <sep> (A) decorate the tree as its decorated. (B) throw wrapping paper onto the tree. (C) begin to put decorations onto the christmas tree. (D) put march lights onto the tree as well.

Ex Output:
C


Ex Input:
[header] How to spring into spring [title] Start off with a spring cleaning. [step] It's good to have a fresh, clean home in the new season. After winter, your home is probably in need of a good airing and tidying up of things that have accumulated during the winter. <sep> (A) Use an old toothbrush and clean : [substeps] A box of cereal. Empty the contents of your house and dump what you see. (B) It's also good to open up things that have been winterized. Here are some ideas to get you started : [substeps] Spring clean your kitchen and spring clean your house open your swimming pool for spring and open your above ground pool after winter prepare your spring garden on a budget. (C) In order to be as welcoming to new residents, try to make a habit of cleaning and showering in the spring. [substeps] On the morning of your first day of spring, pack all sorts of cleaning supplies and supplies you will need to protect your home from the winter elements. (D) You may just be cleaning your whole home to save money and that includes laundry, clean linens, showers, more, and more. Dusting the house and cleaning the garage can help to prevent odors and loss of shine due to the weather.

Ex Output:

B