Tina,the Director of HR,is Disturbed at the High Level of Turnover

Tina,the director of HR,is disturbed at the high level of turnover at her company.From exit interviews,she suspects that certain supervisors have higher dysfunctional turnover rates among their subordinates than others.In order to verify this hunch,Tina should analyze turnover by department and by

A) employee response to attitude surveys.
B) employee length of service.
C) employee race and gender.
D) employee performance ratings.