In one of the case studies in the textbook, Jerry Harkanell worked as an administrative assistant for a large San Antonio hospital, where his clerical duties included the submission of the payroll information for his unit. He found that he could add hours to the timesheets and receive extra pay. He continued to alter his timesheets until he was finally caught. What red flag was present that should have made someone suspicious?a. He used erasable ink to record the hours on the timesheets. b.He showed up for work on a day he had off so he could personally turn in the timesheets. c.No one else in the department had overtime hours but Harkanell. d.All of the above