单选题You are operating your database in NOARCHIVELOG mode. Your most recent backup includes a copy of all of the data files and the control files taken when the current log sequence number was 45. You experience disk failure on the drive on which your SYSTEM tablespace data files are stored. At the time of the failure， the current log sequence number is 98. Which files should you restore to recover from the loss of the SYSTEM tablespace data files？（）AOnly the data files.BAll of the data files and the control files.COnly the data files belonging to the SYSTEM tablespace.DOnly the data files belonging to the SYSTEM tablespace and the control files.
单选题
You are operating your database in NOARCHIVELOG mode. Your most recent backup includes a copy of all of the data files and the control files taken when the current log sequence number was 45. You experience disk failure on the drive on which your SYSTEM tablespace data files are stored. At the time of the failure， the current log sequence number is 98. Which files should you restore to recover from the loss of the SYSTEM tablespace data files？（）
A
Only the data files.
B
All of the data files and the control files.
C
Only the data files belonging to the SYSTEM tablespace.
D
Only the data files belonging to the SYSTEM tablespace and the control files.
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