You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process, you execute the following script: SQL>@utlu111i.sql Which statement about the execution of this script is true?（）

• A、It must be executed from the Oracle Database 11g environment.
• B、It must be executed only after the SYSAUX tablespace has been created.
• C、It must be executed from the environment of the database that is being upgraded.
• D、It must be executed only after AUTOEXTEND is set to ON for all existing tablespaces.
• E、It must be executed from both the Oracle Database 11g and Oracle Database 9i environments.