According to "Fluid mosaic model", cell membrane are semifluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect?

Options

A. Proteins in cell membrane can travel within the lipid layer
B. Proteins can also undergo flip flop movements in the lipid bilayer
C. Proteins can remain confined within certain domains of the membrane
D. Many proteins remain completely embedded within the lipid bilayer