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': 'Mixed tumors of the salivary glands, are \nSelect and explain. \nA. Most common in submandibular gland, B. Usually malignant, C. Most common in parotid gland, D. Associated with calculi', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Eighty percent of salivary neoplasms are in the parotids of which 80% are benign; 80% of these are pleomorphic adenomas ; 80% occur in superficial lobe SRB,5th,413.', 'role': 'assistant'}]