单选题】Bacteria contain a cell wall and a plasma membrane. Antibiotics targeting the cell wall do not affect human cells because the human cells do not express a cell wall. However, antibiotics cannot target plasma membranes because both bacteria and humans express such membranes. Which one of the following is a characteristic of the eukaryotic plasma membrane?
选项：

A: It is composed principally of triacylglycerols and cholesterol.
B:It contains principally nonpolar lipids.
C: It contains phospholipids with their acyl groups extending into theCytosol.
D:It contains more phosphatidylserine in the inner than the outer leaflet.
E: It contains oligosaccharides sandwiched between the inner and outerLeaflets.