Examine the statements that use flashback technologies:

FLASHBACK TABLE customers TO TIMESTAMP TO_TIMESTAMP('2013-02-04 09:30:00', 'YYYYMM¬DD HH:MI:SS');

SELECT * FROM customers AS OF SCN 123456;

FLASHBACK TABLE customers TO BEFORE DROP;

FLASHBACK DATABASE TO TIMESTAMP TO_TIMESTAMP('2013-02-04 09:30:00', 'YYYY-MM-DD HH:MI:SS');

SELECT * FROM customers VERSIONS BETWEEN SCN 123456 AND 123999;

ALTER TABLE customers FLASHBACK ARCHIVE; Which set ofstatements depends on the availability of relevant undo data in the undo tablespace?