A student made a pictorial representation of a eukaryotic cell membrane and labelled the components as follows.

The student has made errors while labelling the components of membrane. Which of the following statements hold true regarding the error?

I. Protein A should be labelled as trans -membrane protein only and not as integral protein.

II. The polarity of the protein A should be reversed because the cytosolic phase always shows reducing environment.

III. Glycolipid should be labelled as glycoprotein.

IV. Protein B should be labelled as integral membrane protein and not as peripheral glycoprotein.