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: Social & Preventive Medicine
Specificity of a diagnostic test denotes: September 2009, March 2013 (b, e) 
Select and explain. 
A. True negative, B. False positive, C. False negative, D. True positive
A: True negative
Answer: A: True negative 
Explanation: Ans. A: True negative