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
A tooth with deep caries pulpal involvement & periapical radiolucency with a draining sinus into the gingival sulcus is a 
Select and explain. 
A. Primary enodontic lesion, B. Primary periodontic lesion, C. Endodontic lesion followed by periodontic lesion, D. periodontic lesion followed by Endodontic lesion
D: periodontic lesion followed by Endodontic lesion
Answer: D: periodontic lesion followed by Endodontic lesion 
Explanation: None