Shepard and Metzler Tested Subjects by Showing Them a Series

Shepard and Metzler tested subjects by showing them a series of pictured geometric shapes. Then they showed them a set of pictures containing the same shapes, rotated into different positions, and shapes they had never seen before. The researchers found that

A) the more the objects had to be rotated in imagery, the longer it took the subjects to decide if the picture matched the original shape.
B) the more objects needed to be manipulated, the more the subjects could not do the experiment, revealing that images have a limited range of motion.
C) the longer it took to rotate the object in imagery, the quicker the subjects correctly dismissed shapes they had not seen before.
D) none of the subjects were able to correctly identify objects whose picture showed them in a position of rotation more than 145 degrees from their original orientation.