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
Arch shaped bone loss around maxillary molars occurs in: 
Select and explain. 
A. Gingivitis, B. ANUG, C. Chronic periodontitis, D. Juvenile periodontitis
D: Juvenile periodontitis
Answer: D: Juvenile periodontitis 
Explanation: None