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
Periodontal diseases associated with neutrophil disorders include 
Select and explain. 
A. Acute necrotizing ulcerative gingivitis, B. Localized juvenile periodontitis, C. Rapidly progressive periodontitis, D. All the above
D: All the above
Answer: D: All the above 
Explanation: None