While reviewing the hacmp.out after a node failure，an administrator realizes that the custom Event queue_down did not execute. The queue_down event shows up when a list of custom events is displayed. What would be the next logical step to resolve this problem？（）

A. Delete the custom event and add a pre event and synchronize.
B. Synchronize the cluster and recheck the cluster custom events.
Create an application server that will stop and start the queues.
D. Add a pre or post event to appropriate cluster events and synchronize.