This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstructed Labour, Subject name: Gynaecology & Obstetrics
[{'content': "Spalding's sign is seen in: \nSelect and explain. \nA. Still born, B. Live born, C. Premature, D. Dead born", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d, i.e. Dead bornRef. Dutta Obs. 9/e, p 303; Sheila Balakrishnan, p 249; Reddy 26/e, p 378, 379Spalding sign: It is the irregular overlapping of the cranial bones on one another, due to liquefaction of the brain matter and softening of the ligamentous structures supporting the vault.Appears 7 days after death.Is evident on both ultrasound and radiology?Similar features may be found in extrauterine pregnancy with live fetus.', 'role': 'assistant'}]