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 blacken steak [title] Choose new york strip steaks or rib eye steaks. [step] You want to use these lean cuts because they will cook evenly and blacken well. Choose steaks that are about 3/4-inch (1.9 cm) thick. <sep> (A) [title] Defrost the steaks completely in the refrigerator overnight. [step] Do not defrost them in the microwave, or you will ruin the process of blackening them. (B) Look at the internal temperature of the sirloin steaks and see if they are ready to be grilled. Use a grill thermometer to check for the internal temperature of the steak when it is on the grill. (C) If you don't want a table full, for instance, skip the steaks. [title] Sear the steak at 180 degrees. (D) [substeps] Before you cook the steaks, check each raw side. For thicker cuts, use 1/4 to 1/2 cup (1.7 to 1.75 g) of brisket for each steak.
[A]: A


[Q]: A large group of people are standing around followed by two hugging and speaking to the camera. several shot <sep> (A) of people pulling discs out and dropping them in the water come back and the man holding the right hand and the other taken off onto him while the man with the rubber rinding case picks up the discs and hit them again. (B) groups are shown in front of a racetrack and climbing onto stands. (C) is then shown of pool balls being thrown around and people hitting the balls. (D) are shown of people playing beer pong as well as laughing with one another and yelling into the camera.
[A]:
D