This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': "Sialosis refers to \nSelect and explain. \nA. Bilateral parotitis, B. Sjogren's syndrome, C. Non inflammatory parotid enlargement, D. Bilateral salivary duct ectasia", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sialosis refers to enlargement of salivary gland due to fatty infiltration, as a result of various metabolic causes like diabetes, acromegaly,obesity,liver disease,alcoholism,bulimia,idiopathic,drug induced(sympathomimetics,carbimazole,thiouracil) SRB,5th,409', 'role': 'assistant'}]