Which statements are true regarding the USERS tablespace?

Which statements are true regarding the USERS tablespace? (Choose all that apply.) See
the Exhibit:

A.
A bitmap is used to record free extents

B.
Free extents information is managed within the tablespace

C.
Free extents information is managed in the SYSAUX tablespace

D.
The data dictionary tables are updated when extents are allocated or deallocated