A Mode

A mode:

A) is a form of technology that enables the overlay of digital images and information over a real (physical) environment.
B) refers to the hardware systems on which the game is played.
C) is an interactive, electronic device used to display video games.
D) is a two-dimensional bar code that can be read using a webcam or mobile device equipped with a code reader.
E) refers to the way the game world is experienced.