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': 'What percentage (%) of sub-lingual salivary gland tumours is malignant? \nSelect and explain. \nA. 80, B. 85, C. 90, D. 95', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]