A. Resource Manager has administrative privileges by design. Even if your IAM user does not have access, you can leverage Resource Manager to provision new resources to any compartment in the Tenancy.

B. Resource Manager manages to Terraform state file for your infrastructure and locks the file so that only one job at a time can run on a given stack.

C. You can use Resource Manager to identify and maintain an inventory of all Compute and Database instances across your tenancy.

D. You can use Resource Manager to apply patches to all existing Oracle Linux interfaces in a specified compartment.