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
[{'content': 'Sialography report of a 46-year-old female suggests: \nSelect and explain. \nA. Sialiolithiasis., B. Normal parotid appearance., C. Sjogren syndrome., D. None.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Image shows cherry blossom appearance.', 'role': 'assistant'}]