Which statement about the enabling of table compression in Oracle Database 11g is true?（）

A.Compression can be enabled at the table, tablespace, or partition level for direct loads only.

B.Compression can be enabled only at the table level for both direct loads and conventional DML.

C.Compression can be enabled at the table, tablespace, or partition level for conventional DML only.

D.Compression can be enabled at the table, tablespace, or partition level for both direct loads and conventional DML.