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: Radiology
A non-vital asymptomatic tooth with a deep carious lesion shows radio-opacity at the apex is possibly: 
Select and explain. 
A. Cementoma, B. Condensing osteitis, C. Periapical cyst, D. Periodontitis
B: Condensing osteitis
Answer: B: Condensing osteitis 
Explanation: None