This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: ENT
[{'content': 'Most common site of origin of pleomorphic adenoma is: \nSelect and explain. \nA. Parotid gland, B. Submandibular salivary gland, C. Minor salivary glands of soft and hard palate, D. Minor salivary glands of lip', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pleomorphic adenoma most commonly arises from the parotid gland. Ninety per cent are located in the superficial lobe while 10% involve deep lobe and present as parapharyngeal tumours.', 'role': 'assistant'}]