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 treatment of acute Periapical abscess is 
Select and explain. 
A. Endodontic therapy or extraction, B. Incision and drainage only, C. Pulp capping, D. None of the above
A: Endodontic therapy or extraction
Answer: A: Endodontic therapy or extraction 
Explanation: None