You are developing a secure document sharing platform. The platform allows users to share documents with other users who may be external to their organization. Access to these documents should be revoked after a configurable time period. The documents are stored in Cloud Storage. How should you configure Cloud Storage to support this functionality?

A. Create signed policy documents on the Cloud Storage bucket. B. Apply access control list (ACL) permissions to the Cloud Storage bucket. C. Generate a signed URL for each document the user wants to share. D. Grant the Storage Object Viewer IAM role to all authenticated users.