This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Normal Labour, Subject name: Gynaecology & Obstetrics
[{'content': 'Controlled ARM is done: \nSelect and explain. \nA. IUD, B. Maternal HIV infection, C. Polyhydramnios, D. Genital herpes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is c, i.e. Polyhydramnios:In case of polyhydramnios to prevent abruptio from sudden rupturing of membranes, controlled ARM is done.', 'role': 'assistant'}]