单选题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.C Create an application server that will stop and start the queues.D Add a pre or post event to appropriate cluster events and synchronize.
单选题
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.
C
Create an application server that will stop and start the queues.
D
Add a pre or post event to appropriate cluster events and synchronize.
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