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
One of the following systemic diseases involving periodontal tissue is not a disorder of neutrophil function 
Select and explain. 
A. Agranaulocytosis, B. Chediak-Higashi syndrome, C. Leukemia, D. Cyclic neutropenia
C: Leukemia
Answer: C: Leukemia 
Explanation: None