A nurse and a physician examine the same set of children to screen them for a common childhood disease. Below are the sensitivity and specificity of their examinations. How would you interpret the specificity of the nurse examination? a. 90% of children without the disease will test negative b. 90% of children who test positive will truly have the disease c. 90% of children who test negative will truly not have the disease d. 90% of children with the disease will test positive.