单选题You are managing an Oracle Database 11g database with this backup strategy： - Every Sunday night， level 0 backup is performed. - On Monday night and subsequent days， level 1 incremental backup is performed. The backups are not cumulative incremental. Which statement about Monday’s backup is true（）AThe backup contains all the used blocks.BThe backup contains all the used and unused blocks.CThe backup contains blocks that have changed since the last level 0 backup.DThe backup contains blocks that have changed since the last level 1 backup taken last week.
单选题
You are managing an Oracle Database 11g database with this backup strategy： - Every Sunday night， level 0 backup is performed. - On Monday night and subsequent days， level 1 incremental backup is performed. The backups are not cumulative incremental. Which statement about Monday’s backup is true（）
A
The backup contains all the used blocks.
B
The backup contains all the used and unused blocks.
C
The backup contains blocks that have changed since the last level 0 backup.
D
The backup contains blocks that have changed since the last level 1 backup taken last week.
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