单项选择题
A. Issue the startup nomount command and then issue the restore parameter file command from the RMAN prompt.
B. Issue the startup nomount command and then issue the restore spfile command from the RMAN prompt.
C. Issue the startup nomount command and then issue the restore spfile from autobackup command from the RMAN prompt.
D. Issue the startup nomount command and then issue the restore spfile from backup command from the RMAN prompt.
E. Issue the restore spfile from autobackup command from the RMAN prompt.