Use your knowledge of the process for managing retention to select the correct labels for this image. This image shows how RPO firms can be evaluated using quantitative, qualitative, and business impact measures. The list under the head "Quantitative Measures" reads as follows: 1. Number of new hires; 2. Time to fill; 3. Cost to fill; 4. Recruiting source. The list under the head "Qualitative Measures" reads as follows: 1. Interview-to-offer ratio; 2. Hiring manager satisfaction; 3. Applicant satisfaction; 4. Source of high performers. The list under the head "Business Impact Measures" reads as follows: 1. New-hire retention rate at six months; 2. New-hire performance at one year; 3. New-hire training success; 4. Source of key employees. A. B. C