Which two statements are true about BFILES?

Which two statements are true about BFILES? (Choose two.)

A.
BFILES support only sequential reads.

B.
BFILES can be used as attributes in an object type.

C.
When LOB is deleted, the corresponding physical file is automatically deleted.

D.
The RMAN backup automatically backs up the BFILE locators and the corresponding physical files.

E.
The physical file corresponding to a BFILE locator must reside on the file system that is accessible from the server where the database exists.