Perky's Imagery Study from the Early 1900s Had Participants Describe

Perky's imagery study from the early 1900s had participants describe images of objects that were dimly projected onto a screen.The significance of Perky's results was that

A) screen images interfered with people's ability to form mental images.
B) people were unconsciously influenced by the projected images when forming their mental images.
C) the screen images had no effect on people's mental images.
D) people "used" the screen images to create their mental images but only when the objects were unfamiliar.