Pre-migration planning from a DB2 V8 for z/OS system to DB2 9 for z/OS system requires two
sub-system tasks to be performed or the migration process for DB2 9 you start will be terminated
immediately. Which pre-migration task must be performed?

A.
DB2 V8 fall-back SPE and V8 subsystem startup

B.
migration jobs for the DB2 catalog and directory

C.
DB2 DSNZPARM changes and a reassemble

D.
sizing and REORG of the DB2 catalog