An IS auditor has imported data from the client's database. The next step—confirming whether the imported data are complete—is performed by: 
A、matching control totals of the imported data to control totals of the original data. 
B、sorting the data to confirm whether the data are in the same order as the original data. 
C、reviewing the printout of the first 100 records of original data with the first 100 records of imported data. 
D、filtering data for different categories and matching them to the original data.