This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
In Rh incompatibility, the prognosis depends on : 
Select and explain. 
A. Serum bilirubin, B. Coomb's test, C. Blood smear, D. Serum albumin
A: Serum bilirubin
Answer: A: Serum bilirubin 
Explanation: Serum bilirubin