Which of the following statements about the lipid bilayer portion of the plasma membrane is FALSE?

A) Some membrane phospholipids form transmembrane channels that allow ion movement.
B) The lipid bilayer defines the boundaries of the cell.
C) The lipid bilayer forms a permeability barrier to polar and charged substances.
D) The lipid bilayer confers fluidity to the plasma membrane.
E) All of the above statements are true.