You are managing a single instance Oracle 10g database that utilizes the following parameters: Which of the following set of commands must you execute to enable Flashback Database?()
A、 STARTUP MOUNT EXCLUSIVE ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN;
B、 STARTUP MOUNT ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN RESETLOGS;
C、 STARTUP MOUNT EXCLUSIVE ATLER DATABASE ARCHIVELOG; ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN RESETLOGS;
D、 STARTUP MOUNT ALTER DATABASE ARCHIVELOG; ALTER DATABASE FLASHBACK ON; ALTER DATABASE OPEN;