[单选题]You installed Oracle Database 11g and are performi

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.