What is the term for the phenomenon where an individual's red blood cells have a mixture of A and B antigens on their surface, but their plasma contains no anti-A or anti-B antibodies?

A Bombay phenotype
B Rh null phenotype
C AB subtype
D Weak A subtype
The AB subtype is a rare blood type where an individual's red blood cells have a mixture of A and B antigens on their surface, but their plasma contains no anti-A or anti-B antibodies.
International Society of Blood Transfusion (ISBT) classification
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: medium