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
[{'content': 'Polyhydramnios is associated with all except : \nSelect and explain. \nA. Diabetes, B. Open spina bifida, C. Multiple pregnancy, D. Renal agenesis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Renal agenesis', 'role': 'assistant'}]