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". 

[Q]: [header] How to cure swollen gums [title] Talk with your dentist. [step] Make an appointment with your dentist if you notice that your gums are bleeding or irritated throughout the day. You can also bring up this issue with your dentist when you see them every 6 months for a cleaning. <sep> (A) [substeps] You can also get a referral to a dietician who specializes in simply treating swollen gums at home. They may be able to diagnose swollen gums by looking at how your gums feel. (B) You can ask that your dentist discuss all of the possible treatment options with you. [substeps] Your dentist will likely order annual x-rays for you. (C) Dentist visits will help clear up any bleeding and ease your pain. [substeps] Some gums naturally bleed after eating. (D) You might end up visiting your dentist twice a year for repeated cleanings. [title] Avoid gum infections if you suffer from a periodontal disease.
[A]: B


[Q]: [header] How to format an ipad [title] Head to the home screen. [step] Press the home button of your ipad to go to your home screen. [title] Access the general settings menu. <sep> (A) [step] At the bottom of the screen, scroll down until you see " general settings. " [substeps] Scroll down until you see " general settings. (B) [step] Look for the settings app on your device, and click it. [substeps] Alternatively, you can tap on " general. (C) [step] Tap on the " settings " icon then select " general " from the options in the settings menu. [title] Tap on " reset " at the bottom-most part of the screen after pressing " general. (D) [step] Use this screen to change your location menu to default to icloud. [substeps] To enter your location menu, tap the settings app from the screen.
[A]: C


[Q]: [header] How to sleep with broken ribs [title] Pick the most comfortable position for you. [step] You may find that sleeping on your back is the most comfortable position when you have broken ribs, or you may find it more comfortable to sleep on your side. Both of these sleep positions are okay to use when you have broken ribs. <sep> (A) If you wake up in the middle of the night and can't sleep on your side, pick a comfortable position to sleep on. [substeps] You can also avoid sleeping on your stomach if you have broken ribs, since the resting position will help you get closer to your ribs. (B) [substeps] In general, you should sleep on your side. This won't enable any jerky movements. (C) Sleeping on your side or on your back will also help to make breathing easier. Try out different positions to find the most comfortable position for you. (D) [substeps] You may feel more secure if you are laying on your back. You can support your weight by wrapping a string or several sling loops around the sleeping surface.
[A]:
C