BPEL processes are being used to implement both the service and client sides of a synchronous web service interaction.Wh

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BPEL processes are being used to implement both the service and client sides of a synchronous web service interaction.Which statement is true?

A. When acting as the client, a BPEL process may omit the Invoke activity.
B. When acting as the service, a BPEL process may omit the Reply activity.
C. When acting as the client, a BPEL processmay not invoke as asynchronous process and wait for a callback.
D. When acting as the service, a BPEL process may not reply to the client with a well- defined fault message.