Which of the following is NOT correct about the outer membrane of Gram-negative proteobacterial cell wall?

A) It has receptor proteins and porins.
B) In pathogens, lipopolysaccharide facilitates phagocytosis.
C) Lipopolysaccharide is toxic when released by dying cells.
D) It is a lipid bilayer membrane.
E) Lipopolysaccharide is absent in the cytoplasmic membrane.