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
RCT treated roots with well filled post and core, has a
periapical radiolucency 
Select and explain. 
A. Apicoectomy and retrograde filling with silver, B. Periapical curettage & apicoectomy, C. Retreat and filling with guttapercha, D. None of above
A: Apicoectomy and retrograde filling with silver
Answer: A: Apicoectomy and retrograde filling with silver 
Explanation: None