This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
All are true about Sjogren syndrome except - 
Select and explain. 
A. Interstitial nephritis Subcutaneous fibrosis, B. Lack of tear, C. Xerostomia, D. More common in male
D: More common in male
Answer: D: More common in male 
Explanation: Primary Sjogren's syndrome (PSS) is characterised by lymphocytic infiltration of salivary and lacrimal glands, leading to glandular fibrosis and exocrine failure. The typical age of onset is between 40 and 50, with a 9 : 1 female-to-male ratio. The disease may occur with other autoimmune diseases (secondary Sjogren's syndrome Ref Davidsons 23e p1038.