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". 

Ex Input:
[header] How to make scented rocks [title] Purchase supplies from a local department store or craft store. [step] You will need plain flour, salt, food coloring and essential oils. Essential oils are oils that have been extracted from various plants. <sep> (A) You do not need to use all different oils, but big quantities will work. [substeps] Choose oils that you associate with fresh fruits and vegetables and herbs. (B) It can be easily purchased at craft supply stores or you may be able to find them online. Get an essential oil primer, then make sure your acrylic rock is thoroughly coated. (C) You can also purchase essential oils from craft stores, or you can order a variety of essential oils online. [title] Mix together 1/2 cup (118 ml) of plain flour and 1/2 cup (118 ml) of salt in a mixing bowl. (D) You will need and obtain the following materials : [substeps] A 40 oz mixing bowl large enough to fit the stones. If you do not have these materials to gather, a mixing machine at an arts and crafts store can be more economical than a large ceramic mixing bowl, which will require little or no space.

Ex Output:
C


Ex Input:
[header] How to avoid the stomach flu [title] Wash your hands often. [step] Wash your hands carefully with soap and water for at least 20 seconds. Always wash your hands after going to the washroom and before and after handling food and eating. <sep> (A) Washing your hands is important, since if the way you handle and eat is bad (germs, bacteria, etc. ), your best chance at preventing the flu is by keeping your hands clean. (B) Don't attempt to dry or clean your hands on something other than a business table. [title] Wear long pants (not utility pants to wear running shoes with). (C) [substeps] It's a good idea to wash your hands between-and as many times as you go to the bathroom. This will help prevent an episode of nausea in the future, as well as allow your body time to shut down its internal defenses to fight off food, germs, and viruses. (D) This will help to prevent the spread of germs. Germs on your hands can get into your eyes, ears, and nose and make you sick.

Ex Output:
D


Ex Input:
[header] How to wear an ear warmer [title] Consider the color. [step] Your ear warmer should be a fashionable accessory that works with the rest of your clothes. When choosing an ear warmer to wear, select one that will match the colors you're wearing. <sep> (A) Black and brown ear warmers also work well, but a zebra ear warmer will have more space, and not provide as much space as beige or brown ear warmers. If you wear the ear warmer too often, you may find it hard to wear it with turquoise, teal, and bronze tones. (B) Choosing a brightly colored ear warmer can cut down on the price since you can also find ear warmers at thrift stores. [substeps] Ear warmers tend to be sticky to the touch, making them a good option for warm clothes. (C) You can wear your ear warmer in a variety of colors, or, you can choose a more eye-catching color that works well with the rest of your wardrobe. Different ear warmer shades will match more colors than the rest of your wardrobe. (D) While picking the same colors works, it's not the only way to coordinate your colors. Make sure that your ear warmer and clothes stay within the same family of tones.

Ex Output:

D