Which two statements are true about the initialization of internal LOBs?

Which two statements are true about the initialization of internal LOBs? (Choose two.)

A.
The EMPTY_CLOB() and EMPTY_BLOB() functions can be used to initialize only null internal
LOBs.

B.
The EMPTY_CLOB() and EMPTY_BLOB() functions can be used to initialize only non-NULL
internal LOBs.

C.
The EMPTY_CLOB() and EMPTY_BLOB() functions can be used to initialize both null and
non-NULL internal LOBs.

D.
The CLOB and BLOB columns can be initialized only by using the EMPTY_CLOB() and
EMPTY_BLOB() functions, respectively.

E.
The CLOB and BLOB columns can be initialized with a character or raw string, respectively,
provided they are less than 4000 bytes in size.