Which statement is true about manually setting a migrator to pause?

A.
The migrator is operational and has encountered an object that has failed to commit.

B.
The migrator is operational but has halted processing backup objects that are available to
be migrated.

C.
The migrator is operational but there are no migration sets available for which it has
required migration capabilities.

D.
The migrator is operational and there is at least one migration set available for which it
has required migration capabilities