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': "Immature bony trabeculae are found in \nSelect and explain. \nA. Fibrous dysplasia, B. Paget's disease, C. Rickets, D. Cleidocranial Dysplasia", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]