The Fluid-Mosaic Model of the Lipid Bilayer States

The fluid-mosaic model of the lipid bilayer states:

A) lipids coexist side by side as discreet units and proteins float in the bilayer, able to move along the plane of the membrane.
B) the lipids form new covalent bonds between chains and lock the proteins into position, much like a mosaic tile.
C) the lipids form a fluid-like membrane that metabolic components (the mosaic) can freely cross.
D) the lipid bilayer forms a rigid structure with channels that allow fluid to pass.