Identify three situations in which you would NOT be able to drop a tablespace. (Choose three.)
A.
when the tablespace is online
B.
when the tablespace has segments with data in it
C.
when the tablespace is a default permanent tablespace for the database
D.
when the tablespace contains a table that is currently being used by transactions
E.
when the tablespace contains undo data that is needed to rollback an uncommitted transaction