Most Plasma Membrane Proteins in Higher Eukaryotic Cells Are Synthesized

Most plasma membrane proteins in higher eukaryotic cells are synthesized on

A) free ribosomes and inserted after translation into the plasma membrane.
B) rough ER ribosomes and carried to the plasma membrane by vesicles that pinch off from the Golgi apparatus.
C) rough ER ribosomes and carried to the plasma membrane by vesicles that pinch off from the rough ER.
D) ribosomes associated with the plasma membrane and inserted into the membrane cotranslationally.