Your web application uses Google Kubernetes Engine to manage several workloads. One workload requires a consistent set of hostnames even after pod scaling and relaunches. Which feature of Kubernetes should you use to accomplish this?

StatefulSets are the correct choice because they provide stable, unique network identifiers (hostnames) and stable, persistent storage for pods. This ensures that even if pods are rescheduled or scaled, their identity and associated data remain consistent, which is crucial for applications requiring stable hostnames. Role-based access control (RBAC) manages permissions, not pod identity. Container environment variables are for configuration, not stable hostnames across pod lifecycles. Persistent Volumes provide storage but don't guarantee stable hostnames for pods.