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: Pathology
[{'content': 'In which of the following type of osteogenesis imperfecta, 90% of newborn die before 4 weeks of age? \nSelect and explain. \nA. Type I, B. Type II, C. Type III, D. Type IV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Type I Osteogenesis imperfecta is the most common and\xa0the\xa0mildest form\xa0of\xa0osteogenesis\xa0imperfecta.\xa0\n\tAround 10%\xa0of the patients show prenatal fractures.\nType II is the most severe form of osteogenesis imperfecta, with extreme bone fragility and frequent fractures.\xa0Around 90% of the cases are either stillborn or die before 4 weeks of postnatal life.\xa0Prenatal fractures are common in most of the patients.\nIn utero fractures occur in 50% of the Type III osteogenesis imperfecta patients.\xa0The rest of the cases acquire fractures in the neonatal period.\xa0No hearing loss has been reported in this type.\n\nReference: Shafer’s Textbook of ORAL PATHOLOGY Eighth Edition page no 458,459', 'role': 'assistant'}]