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
According to American association of Endodontics, which of following terminology is not mentioned in the glossary of terms: 
Select and explain. 
A. Chronic apical periodontitis, B. Acute apical abscess, C. Chronic apical abscess, D. Symptomatic apical periodontitis
A: Chronic apical periodontitis
Answer: A: Chronic apical periodontitis 
Explanation: None