What is the significance of the Rh null phenotype in relation to hemolytic disease of the newborn?

A It is associated with a decreased risk of hemolytic disease ✓
B It is associated with an increased risk of hemolytic disease
C It has no effect on the risk of hemolytic disease
D It is only seen in individuals with a history of transfusions

Explanation

The Rh null phenotype is associated with a decreased risk of hemolytic disease of the newborn due to the lack of Rh antigens on the red blood cells.

Source

Modern Blood Banking and Transfusion Practices
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: high