During the installation of a cluster， the non-IP network failed. The cause was a connector that was  Not properly secured. The customer wants a better notification method in the event that the non-IP network fails in the future.  How could customization of the cluster be accomplished？（）  

• A、 Customize the node up event script to send an email to the operator.
• B、 Have HACMP send mail when the non-IP network fails by customizing the RG_MMOVE event script.
• C、 Change the network module to be slower so that a temporary failure of the non-IP network would not report an error.
• D、 Use snmp or clinfo to monitor the status of the non-IP network and dispatch some type of warning message.