During an upgrade process from 7.x or 8.x to 9 x, when would a catalog migration be recommended?
A. For customers that use long retention periods
B. For any Data Protector 8.0.0 upgrade to Data Protector 8.10 or 9 x
C. For customers that have 64-bit Cell Managers
D. For any Data Protector 7 x upgrade to Data Protector 8.x or 9 x