What Is the Meaning of the Term "Turnover" When Dealing

What is the meaning of the term "turnover" when dealing with people in the organization?

A) Turnover measures the departure of employees from the organization.
B) Turnover measures the rate at which the finished goods inventory is sold during the year.
C) Turnover is the mental attitude about the job.
D) Turnover reflects the number of grievances submitted by employees.
E) Turnover measures the profitability of the firm per employee.