which three tablespaces can be made offline?

Exhibit. Your Oracle 11g database has 6 tablespaces in which: -TEMP is the default
temporary tablespace – UNDOTBS1 is the default undo tablespace – USERS is the default
permanent tablespace In this database, which three tablespaces can be made offline?
(Choose three.)

A.
USERS

B.
UNDOTBS1

C.
SYSAUX

D.
TEMP

E.
SYSTEM

F.
PROD