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
Immature bony trabeculae are found in 
Select and explain. 
A. Fibrous dysplasia, B. Paget's disease, C. Rickets, D. Cleidocranial Dysplasia
A: Fibrous dysplasia
Answer: A: Fibrous dysplasia 
Explanation: None