In a Study of Visual Selection, Participants Were Shown a Video

In a study of visual selection, participants were shown a video of people throwing and catching a ball. Some of the people were wearing white shirts and some were wearing black. Participants were asked to attend only to the group of people wearing white shirts and count the number of times they threw the ball. In this study, participants:

A) could not ignore the participants wearing black
B) reported the total number of times the ball changed hands regardless of whether it was thrown by a person wearing a white shirt or a person wearing a black shirt
C) reported the number of throws made by the people wearing black shirts 50% of the time
D) easily completed the task, but in the process failed to notice some other peculiar events that occurred