In the Context of Evaluating the Quality of a Recruitment

In the context of evaluating the quality of a recruitment source,yield ratios express the:

A) output yielded by a new hire in relation to the cost of recruiting the new hire.
B) the dollar costs incurred per hire.
C) percentage of applicants who successfully move from one stage of the recruitment and selection process to the next.
D) quality of new hires by comparing the cost of training the new recruits to the cost of hiring them.
E) the percentage of applicants who complete one year in the organization after recruitment.