Companycom is migrating from p670 systems running AIX 5.2 to p5 595 systems running AIX 5.3. They will be changing out only the system units. They will re-use the existing 61D drawers and adapters with the new p5 595 systems. What compatibility issue mus

Companycom is migrating from p670 systems running AIX 5.2 to p5 595 systems running AIX 5.3. They will be changing out only the system units. They will re-use the existing 61D drawers and adapters with the new p5 595 systems. What compatibility issue must be considered?（） 

• A、APV features are not supported for some legacy POWER4 adapters
• B、APV will require the most current maintenance level for AIX 5.2
• C、APV features will require that legacy POWER4 adapters be updated with new microcode
• D、The Virtual IO Server must run AIX 5.3 and the LPARs can run either AIX 5.2 or AIX 5.3