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".

Example Input: Two men are doing martial arts with others around them watching. Many other men are shown doing several flips and tricks around each other. two men <sep> (A) are shown hitting people to give them an out and another man joins in. (B) are joined by a woman. (C) flip near each other while others around them watch. (D) stand on a mat while a man is bartending around them.
Example Output: C

Example 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.
Example Output: A

Example Input: [header] How to back up video from a q see security camera system [title] Remove hard drive from the unit, this model has a slide out cartridge containing the hard drive. [step] With other models you may have to take the unit apart. [title] Break the warranty stickers and slide cover off the drive housing (note this will void the warranty on the drive). <sep> (A) [step] Make sure to remove all screws as good old phillips head screws is breaking when removed from the unit. [title] Place the drive back into the housing housing. (B) [title] Remove the serial plates from the drive housing and trace the manufacturer directions for the new drive housing and slide cover. [step] Replace the black wires to the drive housing. (C) [title] Carefully pull out the drive's untwisted screws. [step] Avoid taking out serial number, slide or cartridge. (D) [title] Unscrew drive from housing and remove drive. [title] Obtain a usb to sata converter cable from an electronics store or online.
Example Output:
D