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': 'Osteopetrosis is also known as: \nSelect and explain. \nA. Albers Schonberg disease, B. Marble bone disease, C. Fragilis generalisata, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Osteopetrosis aka Marble bone disease, Albers-Schönberg disease, osteosclerosis fragilis generalisata.\nRef: Shafer's textbook of oral pathology 7th edition page 704", 'role': 'assistant'}]