In order for DLPAR operations to be possible, the RMC daemons on the Hardware Management Console (HMC) must communicate with the RMC daemons on all of the LPARs involved. How can the RMC daemons be restarted on the HMC, causing the least disruption?（）

A.Run "/usr/sbin/rsct/bin/rmcctrl z" as hscroot. 
B.Reboot the HMC, either through the GUI or via the command line. 
C.Disable and re-enable RMC in the Firewall settings in the HMC GUI. 
D.Select the "Partition Communication" checkbox in the LAN Adapter dialogue box.