How does the Ii blood group system influence red blood cell membrane structure?

A It affects the expression of glycosphingolipids on the red blood cell surface ✓
B It modifies the protein composition of the red blood cell membrane skeleton
C It has no known effect on red blood cell membrane structure
D It alters the lipid bilayer fluidity of the red blood cell membrane

Explanation

The Ii blood group system is related to the presence or absence of specific glycosphingolipids (i antigen) on the surface of red blood cells, which can influence their membrane structure and function.

Source

Scientific literature on glycobiology and hematology
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium