A customer has an existing rack environment with 18 x365 and 2 x255 servers.  How can the customer monitor and manage the hardware even if the systems are shut down？（）

• A、Use PC Anywhere over the Ethernet LAN.
• B、Use RDM and Aurema to manage the systems.
• C、Connect high-speed modems to each of the systems’ serial ports to use IBM Director.
• D、Interconnect the Remote Supervisor Adapters II （RSA II） in the x365 servers to the x255 servers.