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
Polyhydramnios is associated with all except : 
Select and explain. 
A. Diabetes, B. Open spina bifida, C. Multiple pregnancy, D. Renal agenesis
D: Renal agenesis
Answer: D: Renal agenesis 
Explanation: Renal agenesis