Which of the Following Situations Can Be Used as an Example

Which of the following situations can be used as an example for social media complicating professional relationships between people?

A) An employee posting an invite to launch of his company's new headquarters on his professional networking page.
B) An employee uses his personal social networking page to announce the birth of his or her child.
C) An employee blogs about an embarrassing incident about his boss, who sees the post.
D) An employee uploads pictures of his coworkers at a workshop that took place in their office.
E) An employee uses his social networking page to invite his colleagues for dinner.