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': 'Which of the following salivary gland tumors has highest rate of malignant transformation? \nSelect and explain. \nA. Parotid, B. Submanidbular, C. Sublingual, D. Minor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]