To ensure that no data is uploaded to non-AcmeCorp instances of OneDrive, the policies that would accomplish this are:

Policy B: This policy allows traffic only for AcmeCorp’s OneDrive and blocks all other Microsoft 365 Suite traffic. It ensures that data is not uploaded to non-AcmeCorp OneDrive instances by restricting access to only the corporate instance of OneDrive.

Policy C: This policy allows traffic for AcmeCorp’s Microsoft 365 Suite but blocks all other OneDrive for Business traffic. It achieves the same outcome by permitting corporate suite usage while preventing uploads to any OneDrive for Business instances that are not part of AcmeCorp.

These policies are designed to provide granular control over the data flow, ensuring that company data remains within the corporate environment and is not transferred to external or personal storage solutions.