An Auditor Vouched Data for a Sample of Employees in a Payroll

An auditor vouched data for a sample of employees in a payroll register to approved clock card/time sheet data to provide assurance that

A) Payments to employees are computed at authorized rates.
B) Employees worked the number of hours for which they are paid.
C) Segregation of duties exist between the preparation and distribution of the payroll.
D) Internal controls relating to unclaimed payroll checks are operating effectively.