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: Ophthalmology
[{'content': "Regarding Sjogren's syndrome, all are true except: September 2010 \nSelect and explain. \nA. Keratoconjuctivitis sicca, B. Rheumatoid ahritis, C. Epiphora, D. Autoimmune in nature", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Epiphora SjOgren\'s syndrome (also known as "Mikulicz disease" and "Sicca syndrome", is a systemic autoimmune disease in which immune cells attack and destroy the exocrine glands that produce tears and saliva SjOgren\'s syndrome can exist as a disorder in its own right (Primary Sjogren\'s syndrome) or it may develop years after the onset of an associated rheumatic disorder such as rheumatoid ahritis, systemic lupus erythematosus, scleroderma, primary biliary cirrhosis etc. (Secondary SjOgren\'s syndrome)', 'role': 'assistant'}]