（单选题）
You have a read-only tablespace on read-only media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read-only tablespace was read/write when the control file was backed up. What should you consider？（）
A take data files from the read-only tablespace offline before performing a recovery
B recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database
C drop the read-only tablespace and re-create the tablespace after recovery
D perform a recovery； status of the tablespace in control file will be changed automatically
正确答案
答案解析
略
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