107.Whichcomponents are needed for successful and most efficient recovery.
需要哪些组件来获得成功和最有效的恢复。
A. The backupRB3 and the current online redo log files
备份的RB3和当前的联机重做日志文件
B. thebackup RB2 and the archived redo log files after the log sequence number 15622
C. BackupR81 and the archived redo log hies after the log sequence number 12871
D. Thebackup RB3 and the archived redo log files after the log sequence number 16721
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