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
Sicca complex is used for: 
Select and explain. 
A. Primary Sjogren syndrome., B. Secondary Sjogren syndrome., C. Benign lymphoepithelial lesion., D. All of the above.
A: Primary Sjogren syndrome.
Answer: A: Primary Sjogren syndrome. 
Explanation: None