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: Unknown
Poly-Hydramnios is not associated with - 
Select and explain. 
A. Renal agenesis, B. Diabetes insipidus, C. Polycystic kidney, D. None of the above
A: Renal agenesis
Answer: A: Renal agenesis 
Explanation: Ans. is 'a' Renal agenesis .Renal agenesis causes oligohydramniosCauses of hydramnios Anencephaly *Open spina bifida*Oesophageal or duodenal atresia*Hydrops fetalis*Chorangioma of the placenta*Multiple pregnancy*Maternal diabetes*Maternal cardiac or renal disease