This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Reversible Cell Injury, Subject name: Pathology
[{'content': 'Which of the following is the most common salivary gland neoplasm? \nSelect and explain. \nA. Mucoepidermoid carcinoma, B. Myoepithelioma, C. Wahin tumour, D. Pleomorphic adenoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pleomorphic adenomas are the most common salivary gland neoplasms. Wahin tumor is the second most common salivary gland neoplasm. Mucoepidermoid carcinoma is the most common primary malignant tumor of salivary glands.', 'role': 'assistant'}]