During the installation of Oracle Database 11g，you do not set ORACLE_BASE explicitly. You selected the option to create a database as part of the installation.  How would this environment variable setting affect the installation？（）  

• A、 The installation terminates with an error.
• B、 The installation proceeds with the default value without warnings and errors.
• C、 The installation proceeds with the default value but it would not be an OFA-compliant database.
• D、 The installation proceeds with the default value but a message would be generated in the alert log file.