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 change trackpad settings on macbook pro [title] Find the system preferences. [step] Starting from your main desktop screen there are two ways to find the system preferences where the mouse and touchpad settings will be located : [title] Bring your cursor to the bottom screen and find the system preferences application. [step] The icon looks like a box with three gears inside it. <sep> (A) Open that to find all your system preferences. [substeps] Alternatively, you can use the spotlight feature. (B) On macbook pro this icon resembles a round blue square with a horizontal green dot on it. On other applications this icon is actually a box with a gear, and is small in appearance. (C) It can be located on the taskbar or in the upper left-hand corner of the window. [title] Let the system preferences application perform its work. (D) [title] Click the customize key in the dialog box. [title] Follow the on-screen instructions to change the customization function.
Example Output: A

Example Input: [header] How to be happily married [title] Don't expect your happiness to be derived from someone else. [step] The most common mistake made in the quest for a happy marriage is to expect that someone should be " making " you happy. The old saying " to have friends requires one to be a friend " applies. <sep> (A) Regardless of whether your happiness is due in some sense to someone you love or something to do with your own, you should hear and be happy. [substeps] Two people don't get married just because there is someone else there to provide love and companionship. (B) Refrain from assuming that your friends and family love and care for you. In fact, expectations for your happiness are far from accurate. (C) If someone is what you expect them to be, try to be a " friend " with them. They will likely be incredibly happy when they express their true love, and please, observe them for a moment before delving in deeper. (D) [title] Focus on how you can make the marriage happy. [step] The only way you can be happy is by focusing on your own efforts to make your marriage partner happy.
Example Output: D

Example Input: [header] How to attend online counseling [title] Seek in-person diagnosis. [step] Although online counseling can be beneficial for you, counselors cannot diagnose you online. This means that you need to see a counselor or therapist in person to diagnose any mental health disorder you have. <sep> (A) This is also a right field as most services and schools do not offer public counseling. [substeps] You may want to look online at https: // cbc.yourdot.com/etc to see which area you belong to, as most online counseling services offer public counseling for you, as well as in-person treatment. (B) [substeps] Once you have a diagnosis, you can look into online counseling help for your disorder. [title] Decide if online counseling works for your disorder. (C) Your medical or mental health professional can arrange for treatment in-person, as well as by calling or texting. [substeps] Your doctor may also be able to refer you to a counselor who has experience. (D) [substeps] Ask your counselor, another person you know, if you can get a referral to a mental health professional. Doing so may save you a lot of discomfort and may help you better understand your diagnosis.
Example Output:
B

