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
L-J cha is used for monitoring- 
Select and explain. 
A. Accuracy, B. Precision, C. Sensitivity, D. Specificity
A: Accuracy
Answer: A: Accuracy 
Explanation: <p> L J cha is used for monitoring of accuracy. Accuracy : degree of closeness of a measured or calculated quantity to it&;s actual ( true) value. Reference: A. Dictionary of Public Health by J Kishore,p5,410. <\p>