Definition: 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 add a twitter tab on tumblr [title] Sign in to both your tumblr and twitter accounts in separate tabs. [title] Go to the " tweet button " code site at twitter.com. [step] You can do this by clicking resources] buttons on the twitter homepage or simply by clicking. <sep> (A) [title] Drag the resulting button into a " tweet " field. [step] If you don't see any placeholder or info buttons yet, look for the proper options in the left sidebar. (B) [title] Choose which twitter button you want on your tumblr page. [step] You can choose from 4 different options. (C) [title] Go to the " this blog " button and follow the provided steps. [title] Copy the code by pressing the finish button. (D) This code links through your account dialog box and to your twitter home page. [title] Click one of the buttons indicated on the trim button.
Output:
B