This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMT Q Bank, Subject name: Forensic Medicine
[{'content': "This is known as: \nSelect and explain. \nA. Spalding Sign, B. Robe's Sign, C. Wood's Sign., D. Normal pregnancy", 'role': 'user'}, {'content': "Answer: A \nExplanation: Spalding Sign: Overlapping of bones in intrauterine death. Robe's sign : Appearance of gas shadow (in 12 hours) Ball sign : Hyperflexion of the spine Helix sign : Gas in umbilical aeries", 'role': 'assistant'}]