A System p distribution customer is very concerned about Reliability， Availability and  Serviceability （RAS）. They are planning to install several p6 servers in their facilities and want to be able to move an LPAR from one System p to another.  Which of the following would accomplish this（）

• A、System p servers using similar SAN storage
• B、System p servers must share an HMC
• C、System p servers must have the same level HMC
• D、System p servers with VIOS