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's syndrome includes all except: 
Select and explain. 
A. Xerostomia, B. Keratoconjunctivitis, C. Arthritis, D. Lymphoma
D: Lymphoma
Answer: D: Lymphoma 
Explanation: None