GCP Professional Cloud Security Engineer Q147

You need to enforce a security policy in your Google Cloud organization that prevents users from exposing objects in their buckets externally. There are currently no buckets in your organization. Which solution should you implement proactively to achieve this goal with the least operational overhead?

A. Create an hourly cron job to run a Cloud Function that finds public buckets and makes them private.
B. Enable the constraints/storage.publicAccessPrevention constraint at the organization level.
C. Enable the constraints/storage.uniformBucketLevelAccess constraint at the organization level.
D. Create a VPC Service Controls perimeter that protects the storage.googleapis.com service in your projects that contains buckets. Add any new project that contains a bucket to the perimeter.