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: Surgery
[{'content': 'The tumour exclusively found in parotid gland: \nSelect and explain. \nA. Wahin tumour, B. Adenocarcinoma, C. Pleomorphic adenoma, D. Acinar cell tumour', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Wahin tumour/papillary cystadenoma lymphomatosum is viually restricted to parotid gland. Occur more commonly in male than female.', 'role': 'assistant'}]