A production system needs to be upgraded from AIX V5.2 to AIX V5.3. All system logs and users need to be saved. <br /> Which installation method will accomplish the upgrade()<p> A production system needs to be upgraded from AIX V5.2 to AIX V5.3. All system logs and users need to be saved. <br /> Which installation method will accomplish the upgrade()</p>
A、A.Update Installation
B、B.Migration Installation
C、C.Preservation Installation
D、D.Mirror rootvg prior to a Preservation Installation