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: Surgery
Brittle bone disease is ? 
Select and explain. 
A. Osteogenesis imperfecta, B. Osteopetrosis, C. Pagets disease, D. Osteoporosis
A: Osteogenesis imperfecta
Answer: A: Osteogenesis imperfecta 
Explanation: Ans. A:Osteogenesis imperfecta Osteopetrosis is also known as Marble bone disease or Albers-Schonberg disease. Paget's disease is known as Osteitis deformans. Osteogenesis imperfecta is known as Brittle bone disease. Osteoporosis is known as Fragile bone disease.