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: [header] How to reduce acne using a tea tree face mask [title] Combine 1 teaspoon of raw, organic honey and 1-2 drops of tea tree oil in a bowl. [step] Put the honey in a clean bowl. Then, carefully pour the tea tree oil into the honey. <sep> (A) You may be using more than one tea tree oil. [substeps] If you are using the same amount of honey, one teaspoon is sufficient. (B) [substeps] It's best to use half tea tree oil for at least one week and once a week it should be reduced by 20 to 25 %. Do not use tea tree oil using the daily lotion, blush, or face powder. (C) Use a small spoon to mix the ingredients together. [substeps] If the honey is very thick, you can warm it up over the stove to make it a bit softer, but don't allow the honey to get too hot or you may end up destroying its antibacterial properties. (D) For detailed instructions, check the instructions for further instructions. Do not forget to mix and match the honey.
Example Output: C

Example 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.
Example Output: C

Example Input: [header] How to answer the phone politely [title] Pick up after 2 or 3 rings. [step] When you're answering calls at work, let the phone ring 2 or 3 times before your answer it. If you let it ring more than 3 times, the caller may become impatient and feel that their call is being ignored. <sep> (A) [substeps] On the other hand, if you pick up after the first ring, the caller may be taken aback by the quick answer. They may not have had enough time to compose their thoughts. (B) [substeps] The caller may think of using telephone pickup. However, this is not an optimal method, so you may need to hang up instead of answer. (C) [substeps] For the same reason, you should not answer after 2 or 3 rings; they will immediately pick up. Calling from home, so long as you come home from work to answer the phone or leave it at home with the ringer off, can disrupt your nightly sleep routine. (D) [substeps] Other people can hang up after 2-3 rings. If you end up answering the phone on the other person's end, give it a try and see what happens.
Example Output:
A