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You have a web application deployed on Cloud Run that is accessible via an internet-facing Application Load Balancer. Your requirement is to restrict access so that only authorized users from your organization can reach the application through a browser, and the solution must support single sign-on (SSO). What is the correct approach?
A
Change Cloud Run configuration to require authentication. Assign the role of Cloud Run Invoker to the group of privileged users.
B
Create a group of privileged users in Cloud Identity. Assign the role of Cloud Run User to the group directly on the Cloud Run service.
C
Change the Ingress Control configuration of Cloud Run to internal and create firewall rules to allow only access from known IP addresses.
D
Activate Identity-Aware Proxy (IAP) on the Application Load Balancer backend. Assign the role of IAP-secured Web App User to the group of privileged users.