Company.com has non-IBM fibre attached storage. The storage is connected to a node in the cluster that has multiple adapters and virtual paths. There is a concern about detecting the loss of one of the fibre adapters since there is no indication to the administrator that one has failed. What feature of HACMP can be sued to assist with this issue？（）

A. Disk heartbeat
B. Error notification
C. Event notification
D. Application monitor