This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': "Paget's disease of bone is also called - \nSelect and explain. \nA. Osteitis deformans, B. Brittle, C. Fibours dysplasia, D. Osteomalacia bone disease", 'role': 'user'}, {'content': "Answer: B \nExplanation: Paget's disease of bone is a chronic disease of the skeleton. Paget's disease causes this process to shift out of balance, resulting in new bone that is abnormally shaped, weak, and brittle. Paget's disease most often affects older people, occurring in approximately 2 to 3 percent of the population over the age of 55. Ref Davidson 23rd edition pg 988", 'role': 'assistant'}]