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Which of the following correctly describes Apache Kafka's replication and broker?
i) A replicated partition contains exactly the same data as the leader. So the same message is stored multiple times.ii) With multiple brokers, one unique message is located on a separate broker.iii) With a stateless broker, the information about message consumption is maintained by the broker. iv) Kafka solves the problem of message deletion by using simple time-based SLA for the retention policy.