An accounting department uses a spreadsheet to calculate sensitive financial transactions. Which of the following is the MOST important control for maintaining the security of data in the spreadsheet?
- A separate copy of the spreadsheet is routinely backed up.
- Access to the spreadsheet is given only to those who require access.
- There is a reconciliation process between the spreadsheet and the finance system.
- The spreadsheet is locked down to avoid inadvertent changes.
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