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': 'Oligohydramnios is associated with \nSelect and explain. \nA. Renal agenesis, B. Neural tube defects, C. Postmature birth, D. Premature birth', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Etiology of oligohydramnios:\xa0\n\nIntrauterine growth restriction\nPost-term pregnancy\xa0\nPremature rupture of membrane\xa0\nDrugs like ACE inhibitors and prostaglandin inhibitors\xa0\nRenal anomalies\xa0\nRenal Agenesis\xa0\nInfantile polycystic disease\xa0\nUpper urinary tract obstructions\xa0\nLower urinary tract obstructions', 'role': 'assistant'}]