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: Consider Input: [header] How to recognize chickenpox [title] Watch for symptoms on the skin. [step] Approximately one or two days after developing a runny nose and sneezing, you may see red spots on your skin. These dots often start on the chest, face, and back, are often itchy, and can quickly spread to the rest of the body. <sep> (A) [substeps] When this occurs, it may also be due to a new virus. If you experience any major allergic reactions to chickenpox, such as hives or rashes, contact the doctor. (B) If you suspect that you may have chickenpox, you can easily detect these signs and get medical care. [substeps] These red itchy spots may be small, crisp, or feel tight when you press them onto your skin. (C) [substeps] If you are experiencing a runny nose, you may also develop a flu or fever the following day after taking chickenpox. Syphilis, the " natural flu, " often shows up early in the infection, and even greater in children. (D) [substeps] These red spots will turn into red bumps and then small blisters (vesicles). These spots contain the virus and are highly contagious.

Output: D


Input: Consider Input: [header] How to care for a cut [title] Wash your hands before treating the cut. [step] You do not want to touch a cut with dirty hands. Before attempting to clean your cut, wash your hands with soap and water. <sep> (A) This will make the cut be less surface-sensitive. [substeps] If you are unable to wash your hands, bring some hand sanitizer with you and wash them thoroughly. (B) Rubbing your hands together can cause irritation, and you may get a serious infection. [title] Scrape the cut with a dentist or surgeon's sharp edge. (C) [substeps] Lather your hands in soap and wash them for about 20 seconds. Make sure to wash under your fingernails and on the backs of your hands. (D) For mild cuts, you may wash your hands with a mild cleanser or special hand sanitizer to hold the bleeding wound and stop it from spreading. Dry the cut quickly with a clean towel and you're finished! [title] Wear gloves.

Output: C


Input: Consider Input: [header] How to transfer files between ftp and dropbox using backup box [title] One method is to use a tool named backup box, which is a website built entirely to help people transfer files between different services. [title] Quickly create an account by entering your preferred email and password. [title] Authorize the account you are transferring from, eg. <sep> (A) [step] Ftp, by clicking the " add new source " button at the top-left hand side of the page. [title] Follow the instructions to grant backup box access to the account you are connecting from. (B) [step] Your ftp name in front of the service should appear on your ftp and dropbox. [title] Before the online dd copying process, open the ftp folder on your computer using the save dialog box. (C) [step] [substeps] If you are transferring files between two different services, then click " allow " in the top right corner, then click " done " in the popup. [title] Choose the dropbox to import files. (D) [step] Stumbleupon will ask for email and password for you to sign in. [title] After verifying the user has registered the account you would like to transfer, click on the " submit request " button to create an account to transfer files between dropbox and dropbox.


Output: A