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
Sjogren syndrome affects: 
Select and explain. 
A. Exocrine glands., B. Paracrine glands., C. Endocrine glands., D. Autocrine glands.
A: Exocrine glands.
Answer: A: Exocrine glands. 
Explanation: None