For each enrollment request message, a health insurance carriers web service always returns a response message acknowled

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For each enrollment request message, a health insurance carriers web service always returns a response message acknowledgement the receipt of the enrollment request. If there are problems fulfilling the requested enrollment, the web service may respond at a later time with an additional response message detailing why the enrollment could not be fulfilled.Which Oracle SOA Suite service component should be used to implement this integration pattern?

A. BPEL Process
B. Mediator
C. Business Rule
D. Human Workflow