Which two statements are true about SecureFile LOB options? (Choose two.)
A.
The COMPRESSION HIGH option can be enabled only for CLOBs.
B.
The COMPRESSION HIGH option can be enabled for all internal LOBs.
C.
The DECRYPT option can be used to remove encryption only if the LOB column is empty.
D.
The DECRYPT option can be used to remove encryption from LOB columns that are empty or contain data.
B,D
ALTER TABLE [TABLE NAME]
MODIFY LOB (COLUMN NAME)
(
[ENCRYPT USING {ALGORITHM NAME} | DECRYPT]