This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Disorders, Subject name: Pediatrics
Hemolytic disease of new born is commonly due to incompatibility of which antigen? 
Select and explain. 
A. C antigen in Rh group, B. D antigen in Rh group, C. E antigen in Rh group, D. Lewis antigen
B: D antigen in Rh group
Answer: B: D antigen in Rh group 
Explanation: Ans. is 'b' i.e., D antigen in Rh group o Repeat from previous sessions