单项选择题

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.