The Sequence of Glycophorin a Displays Which of the Following

The sequence of glycophorin A displays which of the following?

A) the N-terminal domain contains large amounts of hydrophobic amino acids indicating only the N-terminus is embedded in the membrane
B) the C-terminal domain contains a high concentration of Ser and Thr for attachment of O-linked oligosaccharides
C) both the N-terminal and C-terminal domains contain high concentrations of Ser and Thr for attachment of O-linked oligosaccharides
D) the middle portion contains large amounts of hydrophobic amino acids indicating a transmembrane protein
E) none of the above