You are managing a Cloud SQL for PostgreSQL instance in Google Cloud. You need to test the high availability of your Cloud SQL instance by performing a failover. You want to use the cloud command.
What should you do?
A. Use gcloud sql instances failover <PrimaryInstanceName>.
B. Use gcloud sql instances failover <ReplicaInstanceName>.
C. Use gcloud sql instances promote-replica <PrimaryInstanceName>.
D. Use gcloud sql instances promote-replica <ReplicaInstanceName>.