USER_DATA is a nonencrypted tablespace that contains a set of tables with data. You want to convert all existing data in the USER_DATA tablespace and the new data into the encrypted format. Which methodswould you use to achieve this?（）
- A Use Data Pump to transfer the existing data to a new encrypted tablespace
- B Use ALTER TABLE MOVE to transfer the existing data to a new encrypted tablespace
- C Use CREATE TABLE AS SELECT to transfer the existing data to a new encrypted tablespace
- D Enable row movement for each table to be encrypted and then use ALTER TABLESPACE to encrypt the tablespace
- E Encrypt the USER_DATA tablespace using the ALTER TABLESPACE statement so that all the data in the tablespace is automatically encrypted