A.All the machines can be connected to the existing HMC, as long as it is updated to code level 7.7.1 or later
B.The Power 770 requires an HMC (7042-CR5 or later), so they must buy one. All of the systems can be managed by this new HMC
C.They should buy a new HMC for the Power 770 system, and leave the POWER5 and POWER6 based systems connected to the existing one
D.The Power 770 requires an HMC, so they should connect the Power 770 to the HMC and convert the POWER5 and POWER6 based servers to IVM