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': 'Lobstein disease is: \nSelect and explain. \nA. Fibrous dysplasia., B. Achondroplasia., C. Osteogenesis imperfecta., D. Osteopetrosis.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Osteogenesis imperfecta is also known as brittle bone disease or lobstein disease.', 'role': 'assistant'}]