What is required to migrate data from the default pool to a specific application pool after upgrading from Centrastar 2.x to Centrastar 3.x?

A.
Only CDFs with the filled “modification.profile” and “modification.poolid” tag can be migrated

B.
Only data written using a profile with versions later that 2.0 of the SDK can be migrated

C.
Only CDFs with the filled “modification.profile” tag can be migrated

D.
All data can be migrated