In an N8500 system, if an engine node is faulty and the other components are in the normal state, the consequences do not include which of the following?

In an N8500 system, if an engine node is faulty and the other components are in the normal state, the consequences do not include which of the following?

A. The N8500 cannot be managed. B. LUNs on the storage units become unavailable. C. Service performance deteriorates. D. The NFS file sharing service becomes abnormal.