Which Statement Best Describes at the Molecular Level Why AB

Multiple Choice

Which statement best describes at the molecular level why AB is the universal acceptor?

A) It is the least common blood type.
B) It contains both the type A and type B monosaccharides in addition to the core trisaccharide.
C) It only contains the core trisaccharide and does not have any additional sugars on it.
D) Red blood cells of this type do not have any oligosaccharide markers.
E) Type AB has a completely different oligosaccharide marker than A, B, and O.