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
'Cotton-wool' appearance is seen in 
Select and explain. 
A. Paget's disease, B. Osteosclerosis, C. Periapical cemental dysplasia, D. Ossifying fibroma
A: Paget's disease
Answer: A: Paget's disease 
Explanation: None