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: Unknown
[{'content': 'A screening test done in an area with a population of 1000, showed 90 of them positive for diabetes.  The Gold standard diagnostic test done showed 100 as positive for diabetes.  Calculate the sensitivity of the screening test? \nSelect and explain. \nA. 90/100, B. 900/1000, C. 110/100, D. 110/100', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref. Foundations of Community medicine. Page. 385\nTrue positive (a) =\xa090 False negative(c) = 10 Sensitivity = a/(a+c) = 90/100', 'role': 'assistant'}]