What are the recommendations for Oracle Database 11g installation to make it Optimal Flexible Architecture (OFA)-compliant? (Choose all that apply.)

What are the recommendations for Oracle Database 11g installation to make it Optimal Flexible Architecture (OFA)-compliant? (Choose all that apply.)

A.
ORACLE_BASE should be set explicitly.

B.
An Oracle base should have only one Oracle home created in it.

C.
Flash recovery area and data file location should be on separate disks.

D.
Flash recovery area and data file location should be created under Oracle base in a non- Automatic Storage Management (ASM) setup.