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 post to a facebook group on pc or mac [title] Go to https: // www.facebook.com in a web browser. [step] You can use any web browser, such as chrome or safari, to access facebook. If you're not already signed in, sign in now. <sep> (A) [title] Click on the downward-facing arrow in the top right corner of the screen. [step] It's at the top-right corner of the screen. (B) [title] Click your profile picture at the top-right corner of the page. [step] You will see your profile picture in the upper-right corner of the page. (C) [title] Click a group to open the group's menu. [step] Click the group on the right sidebar, or the group's upper menu of options. (D) [substeps] You must already be a member of a group to post to it on your computer. See join groups on facebook to learn how to join a group.

A: D
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Q: [header] How to treat your customer while serving them [title] When the customer approaches your till point, greet them nicely. [step] This means you should acknowledge the customer with eye contact. Say " hello " and smile. <sep> (A) [title] Apologise for any wait, no matter how short. [step] The customer might not understand why they have had to wait. (B) [substeps] Also greet them in a professional manner. Always state your name, address, and similar things. (C) Offer him or her a fresh drink once in awhile. [substeps] Remember to shake each customer's hand. (D) If you don't meet their smile they'll get bored and start saying no. To greet the customer again, do a brief " hi " and introduce them to your horde.

A: A
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Q: [header] How to write fairy tales [title] Focus on a particular theme. [step] You may choose a theme like " identity, " " loss, " " sexuality, " or " family. " you can then explore this theme in your fairy tale. <sep> (A) [substeps] For example, " human beings need a voice in love " or " character needs a friendship in the garden. " [title] Write a series of fairy tales based on your theme. (B) Pick a theme that you relate to personally or feel you can discuss from a unique point of view. [substeps] For example, you may pick a theme like " family " and focus on your relationship with your sister. (C) [substeps] Is it a historical theme or some personal one? What does this theme point at? Are there other themes, relationships, etc? You may choose something of significance for your fairy story. [title] List your characters in your fairy story. (D) Finding a theme that is unique to you will help you create your fairy tale. [title] Choose a purpose for the fairy tale.

A:
B
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