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
Periapical cyst is usually preceded by: 
Select and explain. 
A. Periapical granuloma, B. Periodontal abscess, C. Periapical abscess, D. All of the above
A: Periapical granuloma
Answer: A: Periapical granuloma 
Explanation: None