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
[{'content': 'A tooth with deep caries pulpal involvement & periapical radiolucency with a draining sinus into the gingival sulcus is a \nSelect and explain. \nA. Primary enodontic lesion, B. Primary periodontic lesion, C. Endodontic lesion followed by periodontic lesion, D. periodontic lesion followed by Endodontic lesion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]