You will be given a definition of a task first, then some input of the task.
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".

[header] How to use an external camera with ustream broadcast console [title] Thoroughly review the ustream terms of service acceptable use policy, and privacy policy. [step] Upon creating your account you will simultaneously be agreeing to these terms. [title] Go to the ustream sign in page. <sep> (A) [step] Click on the " accept privacy policy " button on the upper right corner of the account page. Follow these steps to create your ustream account. (B) [step] On the ustream settings screen, enter https: // www.utorrent.com/ustream/login /? Info = utorrentlogin/you will also be directed to a page called " account settings. " click the " more " tab located at the top right corner of this page. (C) [substeps] Create a ustream account, if you haven't already. [title] Click the " login " link in the upper right corner of the page. (D) [title] Input the ustream user name and password into the blanks on the " login with current user " text box and click on " sign in " to proceed. [title] Navigate to the ustream cd-rom installer, and download the drivers for your new software.
Output:
C