Note the following statements that use flashback technology: 1. FLASHBACK TABLE <table> TO SCN <scn>; 2. SELECT * FROM <table> AS OF SCN 123456; 3. FLASHBACK TABLE <table> TO BEFORE DROP; 4. FLASHBACK DATABASE TO TIMESTAMP <timestamp>; 5. SELECT * FROM <table> VERSIONS AS OF SCN 123456 AND 123999; Which of these statements will be dependent on the availability of relevant undo data in the undo segment?（）
- A 1, 2, and 5
- B 1, 3, and 4
- C 2, 3, 4, and 5
- D 1, 2, 3, 4, and 5