Instructions: 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".
Input: [header] How to flirt on tinder [title] Install tinder and make some matches. [step] In order to start flirting with people on tinder, you'll need to install the app and start matching up with other users. Matches are necessary in order to chat, so make sure you take the time to craft a quality profile and start sifting through your potential matches. <sep> (A) [substeps] Tinder is a match platform that allows you to cast a couple specific indices from your profile. Each of these indices will differ slightly in their target audience. (B) [substeps] Most tinder provides a free profile set up on tinder, which you can upload to your email and other linked profiles. [title] Post your profile picture from tinder. (C) However, you'll want to keep in mind tinder isn't user friendly. [substeps] You can't flirt for free on tinder. (D) [substeps] See this guide for detailed instructions for installing the app and creating a solid profile. Tinder is available for free for both ios and android, and requires a facebook profile.
Output:
D