Which of the Following Is Not a Potential Biological Role

Which of the following is not a potential biological role of the lipid asymmetry of the plasma membrane?

A) The glycolipids in the outer leaflet of the membrane may serve as receptors.
B) The presence of phosphatidylinositol primarily in the inner leaflet is involved in signal transduction.
C) Maintenance of a charge differential in the two membrane leaflets.
D) Appearance of phosphatidylserine on the outer surface of aging lymphocytes marks them for destruction by macrophages.
E) Phosphatidylserine on the surface of platelets serves as a signal for blood solubilization.