Which statement is true about the IDfCollection object returned by IDfSession.apply() ?

A.
Because it was not created by a query, it does not have to be closed.

B.
It should be closed after the server method results are processeD.

C.
It returns the content of the server method log file as a BLOB fielD.

D.
It can be used to re-run the method in the case of a failure.