How does a client ensure high availability for master nodes in a Red Hat OpenShift on IBM Cloud cluster?

How does a client ensure high availability for master nodes in a Red Hat OpenShift on IBM Cloud cluster?
A . Users can decide how master nodes should be distributed across zones used in the cluster
B . Master node replicas are automatically spread evenly across zones
C . Users must deploy the application nodes evenly across zones, then IBM deploys the master nodes in the same way
D . Master nodes have six replicas for high availability

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Answer: B