Instead of waiting to send emails to support personnel directly from the finish method of a batch Apex process, Universal Containers wants to notify an external system in the event that an unhandled exception occurs. What is the appropriate publish/subscribe logic to meet this requirement?

A. Publish the error event using the addError() method and write a trigger to subscribe to the event and notify the external system.
B. Publish the error event using the addError() method and have the external system subscribe to the event using CometD.
C. Publish the error event using the Eventbus.publish() method and have the external system subscribe to the event using CometD.
D. No publishing is necessary. Have the external system subscribe to the BatchApexErrorEvent.

Suggest answer: D

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