Which of the following statements about photoreceptors is NOT true?

A)Image-forming eyes are found only in vertebrates.
B)Photoreceptors differ in complexity in different kinds of animals.
C)Eyespots in planaria allow the direction of light to be determined.
D)The simplest photoreceptors only recognize the presence and intensity of light.
E)A compound eye as seen in insects has many different visual units,each containing a lens.