Companycom is planning on upgrading from a pSeries S85 running AIX 4.3.3 to a p5 570 with an HMC. The new server will run AIX 5L 5.2. What should be performed prior to the migration?（）

• A、Verify the ISV application runs on AIX 5.2
• B、Power4 to POWER5 upgrades are not supported without a application recompile
• C、Check the placement and size of the boot logical volume and disk space requirements on the S85
• D、AIX 4.3.3 to AIX 5L 5.2 migrations are perfectly compatible so nothing needs to be checked