What is the function of the unshareall command when run on an NFS server?
A.
Unshares only the last shared resources.
B.
Unshared all resources listed in the /etc/vfstab file.
C.
Unshares only those resources that are not currently being used.
D.
Unshares all shared resources listed in the /etc/dfs/sharetab file.
E.
Unshares and then re-shares all resources listed in the /etc/dfs/dfstab file.