In an Experiment by Simon and Chabris (1999),participants Were to Watch

In an experiment by Simon and Chabris (1999) ,participants were to watch people passing a basketball around and were told to keep track of some activity within the game.What was the distinctive feature of the scene,and what proportion of people failed to notice it?

A) During the game,a person in a gorilla suit walked into and out of the scene;almost everyone failed to notice.
B) During the game,a person in a gorilla suit walked into and out of the scene;nearly half failed to notice.
C) A person in a gorilla suit was one of the ball passers;almost no one failed to notice.
D) A person in a gorilla suit was one of the ball passers;nearly half failed to notice.