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: A boy with dark hair and no shirt is mowing a dirt patch with small patches of grass using a large, orange, push lawn mower. as the boy <sep> (A) continues, he starts to try and mow the grass with the yellow, wind powered, when he is done, he tosses the mower and walks onto the right side of the yard to break the grass apart. (B) finishes his task, he takes the mower off of the camera frame but instead of disappearing behind the screen, he appears to be zooming in on the grass on the left. (C) mows, he pauses and flashes to the camera and two ends are shown before suddenly zipping back to the beginning. (D) mows the dirt patch, large amounts of dirt come up from the ground in a smog like blizzard.
Example Output: D

Example Input: [header] How to stop picking your scabs [title] Disinfect the wound. [step] Open wounds and sores can develop infections. Always wash a new wound thoroughly with soap and water as soon as you obtain it. <sep> (A) Do not use hydrogen peroxide, petroleum or other deodorizers. Do not use antibacterial or antiseptic cleaners, as these may irritate the wound. (B) Then clean it up with an antiseptic wipe or a bit of neosporin and apply a bandage to protect it while it heals. You can also try using betadine or peroxide on the wound to clean and remove unwanted bacteria. (C) [substeps] Spread antibiotic ointment onto the wound, cover the wound with a sterile dressing that may be applied to the wound if it requires it. If you get a scab, wait 15 minutes to let the ointment finish fully absorbing in to the wound. (D) At least once every two weeks, take a shower or bath for seven to 10 days and splash your wound with warm water before applying bandages. Use soap with antibacterial properties and do not share it with others.
Example Output: B

Example Input: [header] How to prevent swollen feet during pregnancy [title] Stretch your legs. [step] Put your feet up as often as you can during the day and stretch your legs. You should flex your feet, do calf raises, rotate your feet, and wiggle your toes. <sep> (A) Try not to press the stressed or sore joints and make sure you know how to properly rotate your legs. [substeps] Flex your toes by using a heel or push on the heel of one foot. (B) These stretches and gentle walking can all pump blood back into your feet to prevent swelling. Try to avoid long periods of sitting or standing. (C) Massaging your legs can help relieve your stress and ease your tension. [substeps] Do this every day before you want to stretch. (D) Try to stretch your feet as often as you can throughout the day to decrease swelling on your feet. [substeps] You should also try jumping up onto a yoga mat or a chair.
Example Output:
B