Your database is running in the ARCHIVELOG mode. You placed a tablespace， tbs_1， offline with the immediate option. Which statement is correct in this scenario？ （）

• A、The operation would fail if tbs_1 were a read-only tablespace.
• B、The operation would fail if tbs_1 were a read/write tablespace.
• C、The operation would fail if tbs_1 were the default tablespace for the database.
• D、If the above operation were successful， media recovery would be required to bring the tablespace online.
• E、If the above operation were successful， instance recovery would be required to bring the tablespace online.