When Vesicles from the Golgi Apparatus Deliver Their Contents to the Exterior

When vesicles from the Golgi apparatus deliver their contents to the exterior of the cell, they add their membranes to the existing plasma membrane. This is made possible by

A) the capacity of lipids to associate with one another.
B) the fact that saturated fatty acid chains allow for close packing of fatty acids in the bilayer.
C) the great affinity cholesterol molecules in the plasma membrane have for fatty acid tails.
D) the polar proteins' affinity for fatty acids.
E) the noncovalent interactions of the anchored membrane proteins.