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: Dental
The tooth is tender on vertical percussion. It may be due to 
Select and explain. 
A. Osteomyelitis, B. Periapical inflammation, C. Necrotic pulp, D. Angular bone loss
B: Periapical inflammation
Answer: B: Periapical inflammation 
Explanation: None