Which of the following is a characteristic of the Kell blood group system?

A It is the most common blood group system
B It is a complex system with multiple antigens ✓
C It is associated with a low risk of hemolytic disease of the newborn
D It is not clinically significant in transfusion medicine

Explanation

The Kell blood group system is a complex system with multiple antigens, and it is clinically significant in transfusion medicine due to its association with hemolytic disease of the newborn.

Source

ISBT website
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: high