In the context of digital technologies for entertainment, consider the following statements:
1. In augmented reality (ar), a simulated environment is created and the physical world is completely shut out.
2. In Vistual Reality (VR), images generated from a computer are projected onto real-life objects or surroundings.
3. AR allows individuals to be present in the world and amproves the experience using the camera of smart-phone or PC.
4. VR closes the world, and transposes and individual, providing complete immersion exprerience.
Which of the statements given anove is/are correct?