You are installing Oracle Database 11g on your server. During the installation Oracle Universal Installer （OUI） prompts you to enter the path of the inventory directory and also prompts you to specify an operating systemgroup name.  Which statement is true in this case（）

• A、The ORACLE_BASE parameter is not set.
• B、The installation is being performed by the root user.
• C、The operating system group that will be specified should have root user as its member.
• D、The installation is being performed without the "Create Starter Database" option selected.
• E、The operating system group that will be specified must have permission to write to the inventory directory