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: Pathology
Mikulicz's disease is: 
Select and explain. 
A. An inflammatory disease, B. Neoplastic disease, C. An autoimmune disease, D. Viral infection
C: An autoimmune disease
Answer: C: An autoimmune disease 
Explanation: None