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
An asymptomatic tooth has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth; this mass is most likely to be: 
Select and explain. 
A. Cementoma, B. Condensing osteitis, C. Chronic apical periodontitis, D. Acute apical periodontitis
B: Condensing osteitis
Answer: B: Condensing osteitis 
Explanation: None