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': 'Pleomorphic adenoma usually arises from- \nSelect and explain. \nA. Parotid gland, B. Sub mandibular gland, C. Minor salivary gland, D. Superficial lobe', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]