This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Orthopaedics
[{'content': 'Albers Schonberg disease is: \nSelect and explain. \nA. Paget, B. Osteogenesis imperfecta, C. Osteoporosis, D. Osteopetrosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Osteopetrosis is also called as "Marble bone Disease" and "Albers Schonberg Disease" Paget\'s disease is also known as osteitis deformans. Both Paget\'s and Osteopetrosis are osteoclast defect. Osteogenesis imperfecta is also known as brittle bone disease. Osteoporosisis known as porous bone.', 'role': 'assistant'}]