Jannie is an assistant payroll staff at Hanks Ltd. When preparing the weekly payroll summary, she found that she is unable to match the total payroll with batch totals of payroll submitted from different departments. In some cases, she is unable to trace certain payments to the original timesheets. Which control would be most likely to address this situation? a. A good audit trail b. Segregation of duties c. Reviews of operating performance d. Physical protection of assets e. Personal policies and practices