This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
Antenatal diagnosis can be made from all the following except 
Select and explain. 
A. Foetal blood, B. Maternal blood, C. Amniotic fluid, D. Decidua
D: Decidua
Answer: D: Decidua 
Explanation: Deciduae - the endometria lining of the uterus is called decidua during pregnancy, and it is shed after delivery, and no role for antenatal diagnosis.