When performing a migration-based upgrade from an IBM Tivoli Business Service Manager
(TBSM) V4.2.X system which option is supported?

A.
configure TBSM so that an Netcool/OMNIbus ObjectServer is no longer required

B.
install a new Netcool/OMNIbus V7.3.1 ObjectServer using the TBSM installation media

C.
use an existing Netcool/OMNIbus V7.1 ObjectServer and update the schema if required

D.
install TBSM V6.1 and point to the same ObjectServer as the running TBSM V4.2.1 system

Explanation: