This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
[{'content': 'For a screening test, 90% specificity means that 90% of non diseased persons will give a - \nSelect and explain. \nA. True negative result, B. True positive result, C. False negative result, D. False positive result', 'role': 'user'}, {'content': 'Answer: A \nExplanation: a 90% specificity means that 90%of the non diseased persons will give "true negative result",10% of non diseased people screened by the test will be wrongly classified as &;;diseased" when they are not. ref:park&;s textbook of preventive and social medicine,22nd edition,pg no 131', 'role': 'assistant'}]