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': 'Which type of osteogenesis imperfecta is also known as imperfecta with blue sclera? \nSelect and explain. \nA. Type 1, B. Type 2, C. Type 3, D. Type 4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Clinical types of osteogenesis imperfecta:\n\nOsteogenesis imperfecta, type I\xa0\xa0\n\nOsteogenesis imperfecta tarda\xa0\nOsteogenesis imperfecta with blue sclerae\xa0\n\n\nOsteogenesis imperfecta congenital; type II\n\nOsteogenesis imperfecta congenital, neonatal lethal\nVrolik type of osteogenesis imperfecta\n\n\nOsteogenesis imperfecta, progressively deforming, with normal sclerae: type III\xa0\xa0\n\nGene map locus 17q21.31-q22,7q22.1\n\n\nOsteogenesis imperfecta, type IV\xa0\xa0\n\nOsteogenesis imperfecta with normal sclerae\xa0\xa0\n\n\n\nRef: Shafer's textbook of oral pathology 7th edition page 699", 'role': 'assistant'}]