How can the analyst ensure only one email is sent in this circumstance?

The SOC team complained that they have can only see one Offense in the Offenses tab. space of 10 minutes, but the analyst

How can the analyst ensure only one email is sent in this circumstance?
A . Configure the postfix mail server on the Console to suppress duplicate items
B . Ensure that the Rule Action Limiter is configured the same way as the Rule Response Limiter.
C . Add a Response Limiter to the Rule, configured to execute only once every 30 minutes.
D . Disable Automated Offense Notification – by email, in Advanced System Settings.

Answer: A