Based on the Publisher and Subscriber Roles Established by the Application

Multiple Choice

Based on the publisher and subscriber roles established by the application of the Event-Driven Messaging pattern, which of the following statements are true?

A) a service, acting as a publisher, issues event notification messages to an event management program that is responsible for broadcasting the messages
B) a service consumer, acting as a subscriber, can selectively subscribe to specific events
C) an intermediate event management program enters the role of subscriber when accepting event subscriptions
D) upon receiving a message associated with an event that a service consumer subscribed to, the service consumer enters the publisher role