What Is the Purpose of Erving Goffman's (1922-1982) Concept of Dramaturgy

What is the purpose of Erving Goffman's (1922-1982) concept of dramaturgy?

A) To demonstrate that we are all acting and following scripts in our interactions, hoping to achieve good impression management when we are performing front stage, and able to be our true selves when we are backstage.
B) To recognize how people can become very dramatic if they are unable to achieve their goals or conform to the rules of society.
C) To explain the dynamics between the different actors and roles of the bourgeoisie, the proletariat, and the lumpenproletariat.
D) To illustrate that all of life is a stage, and people are free to authentically express themselves without fear of how their audience will perceive them.