Task: Instance Description Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes the instance 'Twitter'?

A. An American microblogging and social networking website founded by David Karp in 2007 and currently owned by Automattic. The service allows users to post multimedia and other content to a short-form blog. Users can follow other users' blogs. Bloggers can also make their blogs private. For bloggers many of the website's features are accessed from a "dashboard" interface.
B. A day to bring awareness to the wage gap between LGBTQIA+ people and non-LGBTQIA+ people. Usually held on the third Wednesday in June.
C. A form of cant slang used in Britain by some actors, circus and fairground showmen, professional wrestlers, merchant navy sailors, criminals, prostitutes, and the gay subculture.
D. An American microblogging and social networking service on which users post and interact with messages known as "tweets". Registered users can post, like, and retweet tweets, but unregistered users can only read them. Users access the instance through its website interface, through Short Message Service (SMS) or its mobile-device application software ("app").

Answer: An American microblogging and social networking service on which users post and interact with messages known as "tweets". Registered users can post, like, and retweet tweets, but unregistered users can only read them. Users access the instance through its website interface, through Short Message Service (SMS) or its mobile-device application software ("app").