What Happens in the Typical Cyberball Game Paradigm

What happens in the typical cyberball game paradigm?

A) Participants begin playing an electronic game of "catch" with two avatars, and the avatars gradually increase the extent to which they include the participant.
B) Participants begin playing an electronic game of "catch" with two avatars, and the avatars eventually stop including the participant in the game.
C) Participants engage in a dialogue with a computerized avatar that they believe is a participant in another room on a different computer.
D) Participants engage in a dialogue with a participant in another room, whom they believe to be only a computerized avatar.