What Does It Mean to Say That Communication Is Irreversible

What does it mean to say that communication is irreversible?

A) You send messages to others even though you might think you aren't communicating or you might not want to be communicating.
B) Once you have communicated something to others, you can never return to the state you were in before that message was sent.
C) What you do and say affects how other people feel, perceive themselves, and think about others in ways that raise ethical issues.
D) All of the above explain how communication is irreversible.