Match the four functions of payroll activities with their related internal controls: 

1. Hiring employees. 

2. Timekeeping. 

3. Preparing the payroll. 

4. Paying the payroll. 

________ a. An independent employee should sign and distribute the prenumbered checks.

________ b. Supervisors should monitor hours worked through time reports.

________ c. Human Resources department should authorize employment.

________ d. Two or more employees should verify payroll amounts.