How does global cache help resolve message affinity issues with request/reply scenario when scaling IBM Integration Bus nodes?

How does global cache help resolve message affinity issues with request/reply scenario when scaling IBM Integration Bus nodes?
A. The requests and replies may be collected in the global cache for audit.
B. The global cache improves the performance of the request/reply message communication.
C. Request messages are sent to the back end and synchronized through the global cache lock.
D. The incoming information may be saved in the global cache with the message id as the key and correlated on any server form the correlation id.

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