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When creating a spreadsheet application to track project expenses for a team of 15 members, which formula approach ensures both data accuracy and security while maintaining compliance with EU data protection regulations? A Set up a spreadsheet with formulas that pull data from external sources and use a shared email attachment method for distribution to team members for input B Develop a spreadsheet with formulas that include all team members' personal identifiers and use a public forum for team collaboration and data sharing C Design a spreadsheet with complex formulas that reference multiple sheets and use a public web browser to access the file for real-time collaboration across all team members D Create a spreadsheet with formulas that automatically calculate totals and use data validation to restrict input to predefined categories, while storing the file on a secure network drive with restricted access E Use a shared cloud storage service with edit permissions set to 'anyone with the link' and enable automatic saving to ensure no data is lost
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