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 remove malware [title] Understand that viruses, trojans, worms, spyware and bots are all malware that can damage your system. [substeps] A trojan is software that may look legitimate, but tricks you into downloading it. It then activates, and can delete files and steal data or give the perpetrator access to your system. <sep> (A) An administrator is a person with whom you can password protect your database. A trojan is a type of perpetrator that can use your database, copy and resize, hack into users' databases and earn your trademark. (B) [title] Verify that your computer has a dedicated shutoff defroster. [step] In theory, you would press the power key to turn it on and off while running the software program. (C) Helix can easily catch this software, so make sure you are safe. [title] Find the error button and quickly click on it in the settings section. (D) A rootkit can be downloaded unknowingly along with other programs that you install. It can hide on your computer and can avoid normal means of detection.

Output: D


Input: Consider Input: [header] How to wear rings [title] Use a ring-sizer to find the appropriate size for a ring. [step] Ring-sizers are plastic sheets with a variety of different sizes on them, which you can slide your finger into to find an appropriate fit. These are available at every jewelry counter for sizing rings. <sep> (A) [substeps] Your ring should fit your finger comfortably. It needs to be snug enough so that it stays on, but loose enough to slide off at the knuckle. (B) Use your ring-sizer to find a size that fits your finger size-which sounds easy. [substeps] A ring size 14-inch (27.6 cm) is approximately the ideal size, though it can add a mature look to a ring. (C) Many rings, especially those with 3 or more sizes, will fit comfortably onto your ring. [substeps] You can also do this freehand by simply finding a ring-sizer with a similar size. (D) When one is worn, do not buy one with rounded sides. This is likely to break or splinter, and it will probably have uva, bva, and uvb features of the ring.

Output: A


Input: Consider Input: A group of wrestlers have slammed another wrestler to the ground. they <sep> (A) are battling for dominance over a matador. (B) are all standing outside the wrestling ring. (C) hit him with batons as he kicks a man on the floor. (D) make a punching session with the wrestler in the ring.


Output: B