You decided to use Direct NFS configuration in a non-RAC Oracle installation and created the oranfstab file in /etc. Which two statements are true regarding this oranfstab file？（））  

• A、 Its entries are specific to a single database.
• B、 It contains file systems that have been mounted by Direct NFS.
• C、 It is globally available to all Oracle 11g databases on the machine.
• D、 It contains file systems that have been mounted by the kernel NFS system.