You issued the following command on the temporary tablespace LMTEMP in your database: SQL>ALTER TABLESPACE lmtemp SHRINK SPACE KEEP 20M; Which requirement must be fulfilled for this command to succeed?（）

• A、The tablespace must be locally managed.
• B、The tablespace must have only one temp file.
• C、The tablespace must be made nondefault and offline.
• D、The tablespace can remain as the default but must have no active sort operations.