Detailed 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".
Q: [header] How to take an uber to a friend [title] Open the uber app. [step] If you're not automatically signed in, enter your login information. [title] Tap where to? . <sep> (A) [step] In the upper right corner of the screen is a " get started? " link. Tap it and a window will prompt you. (B) [step] This opens up a list of all your requests from this friend, and you'll be asked for a place to meet up. The us group instant messenger service website is the only one with this feature. (C) [title] Tap ride to a friend's current location. [step] You only need to tap this the first time you use this feature. (D) [step] You'll need to scroll down the screen to find the " log in " button. [title] Tap your friend's uber account.
A:
C