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': 'Bag of membrane ruptures : \nSelect and explain. \nA. Before full dilatation of cervix, B. After full dilatation of cervix, C. After head is engaged, D. With excessive show', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b i.e. After full dilatation of cervix Membranes usually rupture after full dilatation of cervix or sometimes even beyond, in the second stage. Early Rupture of Membranes : Rupture of membranes any time after the onset of labour but before full dilatation of cervix. Premature nupture of Membrane : Rupture of membranes before the onset of labour. Sometimes the membranes remain intact until completion of delivery, the fetus is then born surrounded by them and the poion covering the head of the newborn infant is known as the Jaul.', 'role': 'assistant'}]