This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Prenatal Diagnosis, Subject name: Gynaecology & Obstetrics
[{'content': 'Amniocentesis is done for all of the mentioned indications EXCEPT \nSelect and explain. \nA. Fetal Lung maturity, B. Oligohydramnios, C. Congenital infections, D. Genetic defects', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Indications of Amniocenetesis- Fetal genetic disorders Congenital infections Allo immunizations Fetal lung maturity Amnioinfusion is done for oligohydramnios. Amniocenetesis may be done for polyhydramnios as a therapeutic measure.', 'role': 'assistant'}]