Which of the following is NOT a correct statement regarding collar cells?

A) They make up the inner layer of certain sponges.
B) The collar cell is an extension of the cell wall and consists of microvilli.
C) Collar cells create a water current that brings food and oxygen to the cells, and carries away carbon dioxide and other wastes.
D) Collar cells trap and phagocytize food particles.
E) Together, the collar cells of some sponges can pump a volume of water equal to the volume of the sponge each minute.