Read the following scenario, and then answer the question below.

Olivia walks to a coworker’s empty desk to borrow a pen and sees that the coworker has an open e-mail confirming her last paycheck deposit. Olivia reads the e-mail. She is upset to learn that the coworker makes more than she does. She tells her best friend her coworker’s salary in an e-mail.

Which principles of Internet etiquette is Olivia breaking?
not sending repeated, unwanted e-mails
avoid engaging in angry online chats
respecting others by not shouting
protecting the privacy of others