10. In an Covid-19-infected cell producing Covid-19 virus particles, the viral glycoprotein is expressed on the plasma membrane. How do the viral glycoproteins get to the plasma membrane? They are synthesized________. (A) on ribosomes on the plasma membrane (B) by ribosomes in the rough ER and arrive at the plasma membrane in the membrane of secretory vesicles (C) on free cytoplasmic ribosomes and then inserted into the plasma membrane (D) by ribosomes in the rough ER, secreted from the cell, and inserted into the plasma membrane from the outside